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Advanced Analog Technology, Inc.
AAT1101 Series
Details are subject to change without notice
TRIPLE OUTPUT TFT LCD PWM CONTROLLER
Features
Complete PWM Power Control Circuitry Precision Reference: 1.25V1% (25 o C ) Low Operating Voltage: 2.5V to 6.5V Under-Voltage Lockout Protection 5V or 3.3V Selectable Over Voltage Lockout Protection (AAT1101/A only) AAT1101/AAT1101A/AAT1101C: 500kHz Fixed AAT1101B: 50k~1MHz Programmable Internal Power Up Sequence Control Totem Pole Output Output Short Circuit Protection Low Dissipation Current: 2.5mA (f=500kHz, Duty=50%)
General Description
The AAT1101 series provide an integrated triple-channel pulse width modulation (PWM) solution for the power supply of LCD displays. These devices offer system engineers the flexibility to tailor-make the power supply circuitry for specific applications. Each channel contains its own error amplifier, PWM comparator, dead-time control (DTC) and output driver. The under-voltage protection, over voltage protection, power sequence control, shutdown control circuit, oscillator, short circuit protection, and voltage reference circuits are the common features of the three channels. The AAT1101 series contain two exclusive boost circuits at CH1, CH3 and an exclusive buck_boost circuit at CH2. AAT1101's Power Up sequence initiates at CH1 then CH2 and finally CH3. AAT1101A/C's Power Up sequence acts in the order of CH2, CH3, and then CH1. AAT1101B's Power Up sequence starts At the completion of from CH2, CH1, and then CH3.
SHDN IE3 IE1 EO 1 PRDS CHC OVS (OSC) (NC)
Pin Configuration
TOP VIEW
IE2 PRDB 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9
the Power Up sequencing, the SCP pin stays low and enters the Wait State of short circuit protection. Power Up sequencing delay and short circuit protection delay are set by connecting a capacitor to the SCP pin. Furthermore, these devices can operate with supply voltage ranging from 2.5V to 6.5V and function efficiently in an environment with low power supply. With a minimum number of external components, the AAT1101 series offer a simple and cost effective solution for TFT LCD.
VDD
OUT2 OUT3 OUT1 GND SCP
VREF
(TSSOP-16 PACKAGE)
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Page 1 of 23 V 1.0
Advanced Analog Technology, Inc.
AAT1101 Series
Pin Description Pin # Name I/O Description 1 IE2 I Inverted Input of Error Amplifier 2 (EA2) 2 PRDB O Power Ready Output 3 I Supply Voltage VDD 4 OUT2 O Channel 2 (CH2) Output 5 OUT3 O Channel 3 (CH3) Output 6 OUT1 O Channel 1 (CH1) Output 7 GND Ground 8 SCP I Short Circuit Protection 9 VREF O Reference Voltage Output 10* OVS I/O 3.3V or 5.0V Over Voltage Selection and Over Voltage Output 10** OSC I/O Frequency Setting Capacitor & Resistor Input 10*** NC NC 11 CHC O Channel Control 12 PRDS I Power Ready Set 13 EO1 I/O Feedback Input of Error Amplifier 1 (EA1) 14 IE1 I Inverted Input of Error Amplifier 1 (EA1) 15 IE3 I Inverted Input of Error Amplifier 3 (EA3) 16 SHDN I Shutdown Control *G AAT1101A only **G AAT1101B only ***G AAT1101C only Absolute Maximum Ratings CHARACTERISTICS Supply Voltage Input Voltage ( IE - ) Output Voltage CH1, CH3 Output Current CH2 IO Sink ( t w O 2 s , DutyO 10%) Output Peak Current Source ( t O 2 s , DutyO 10%) w Operating Free-Air Temperature Range Storage Temperature Range
SYMBOL VDD VI VO
VALUE 8 VDD VDD +0.3 - 41 /+21
- 21 /+41
UNIT V V V mA mA mA
o o
I opeak
TC
Tstorage
+200
- 200 - 20 to +85 - 45 to +125
C C
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Advanced Analog Technology, Inc.
AAT1101 Series
Recommended Operating Conditions Supply Voltage, VDD (with R OVS ) Supply Voltage, VDD (without R OVS ) Supply Voltage, VDD (AAT1101B/C Only^ Input Voltage, IE1, IE3 Input Voltage, IE2 Output Voltage Output Current, I out1 , I out 3 Output Current, I out 2 Output Current of Error Amplifier Operating Free-Air Temperature Symbol VDD VDD VDD VI13 VI 2 VO I O13 I O2 I OE TC Min 2.5 2.5 2.5 0.95 0.4 0 - 20
Typ 5.0 3.3 3.3 -
Max 5.7 3.8 6.5 1.55 1.0 VDD
- 40 /+20 - 20 /+40
Unit V V V V V V mA mA A
o
-
60 85
C
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Advanced Analog Technology, Inc.
AAT1101 Series
Electrical Characteristics, VDD = 3.3V (Unless Otherwise Specified) (See Note 1)
OscillatorG] AAT1101/AAT1101A/AAT1101C^
Parameter Test Condition
Frequency Frequency Changes with TC Maximum Duty Cycle OscillatorG] AAT1101B only^
Parameter
f OSC f T Txon
TC = 25 C
o
Min 400 70
Typ 500 5 85
Max 600 10 95
Unit kHz % %
Test Condition
Min 400 0.95 0.35
Typ 500 1.00 0.40
Max Unit 600 1.05 0.45 kHz V V
Frequency "H" Level Output Voltage "L" Level Output Voltage
f OSC VOSCH VOSCL
C OSC = 130pf, R OSC = 7 k C OSC = 130pf, R OSC = 7 k C OSC = 130pf, R OSC = 7 k VDD = 2.5V to 6.5V, TC = 25 oC C OSC = 130pf, R OSC = 7 k -
Frequency Change with VDD Frequency Changes with TC Output Source Current
f V
-
1
2
%
f T I OSC
- 220
% - 200 - 180 A
5
10
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Advanced Analog Technology, Inc.
AAT1101 Series
Electrical Characteristics, VDD = 3.3V (Unless Otherwise Specified) (Cont.)
Under Voltage (UV) and Over Voltage (OV) Protection
Parameter Test Condition Min Typ Max Unit
UV Upper Threshold Voltage UV Lower Threshold Voltage UV Hysteresis ( VUPH - VUPL ) OV 3.3V Threshold Voltage** OV 5V Threshold Voltage**
VUPH VUPL VHYS VOP33 VOP5
TC = 25 C, AAT1101/A/B TC = 25 C, AAT1101C TC = 25 C, AAT1101/A/B TC = 25 C, AAT1101C TC = 25 oC, AAT1101/A/B TC = 25 C, AAT1101C TC = 25 oC TC = 25 oC, OVS connects a 56 k resistor to VDD
o o o o
o
2.1 2.0 1.9 1.7 0.1 0.18 3.8 5.7
2.3 2.2 2.1 1.87 0.2 0.33 4.1 6.1
2.5 2.4 2.3 2.05 0.3 0.48 4.4 6.5
V V V V V V V V
**: AAT1101/AAT1101A only Shutdown Control
Parameter Test Condition Min Typ Max Unit
Shutdown Release Input Voltage Shutdown Enable Input Voltage Short Circuit Protection Control
Parameter Test Condition
2.0 -
-
0.5
V V
Min
Typ
Max
Unit
Input Threshold Voltage Latch Reset Voltage by VDD Latch Reset Voltage by
SHDN
Vr1 Vr1 Vr 2
VR _ VDD
CH1 (EO1) CH3 (IE3) CH2 (IE2) TC = 25 oC
o
1.10 1.20 0.67 0.8 1.20
- 2 .6
1.15 1.25 0.70 1.5 1.25
- 2 .0
1.20 1.30 0.73 1.8 0.5 1.30
- 1 .4
V V V V V V
A
VR _ SHDN TC = 25 C
Short-Circuit Detection Threshold Voltage SCP Terminal Source Current
Vr 3 I SCP
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Advanced Analog Technology, Inc.
AAT1101 Series
Electrical Characteristics, VDD = 3.3V (Unless Otherwise Specified) (Cont.)
Power Ready Output
Parameter Test Condition
Min 1.18
- 5 .2
Typ 1.28
- 4 .0
Max Unit 1.38
- 2 .8
Power Ready Threshold Voltage Power Ready Source Current Power-Up Sequence Delay
Parameter
VPRTH I PRTH
TC = 25 o C
V A
Test Condition
Under Voltage
Power Ready
t PR
t PR = 3.2 x 10 C PRDS
(
5
)
Min
Typ
Max Unit
-
t PR t PR t CH1 0.8 t CH1 0.8 t CH1 0.8 t CH1 32 t CH1
-
s s s s s s s
Under Voltage CH1 Output CH1 Output CH2 Output CH2 Output CH3 Output CH3 Output CHC Set High CH3 Output SCP Ready to Protect SCP Enable Time
t PR t CH1 t CH 2 t CH 3 t CH 3
t SCP
t CH1 = (19531.25) C SCP
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Advanced Analog Technology, Inc.
AAT1101 Series
Electrical Characteristics, VDD = 3.3V (Unless Otherwise Specified) (Cont.)
Power-Up Sequence Delay (for AAT1101A/AAT1101C)
Parameter Test Condition
Under Voltage Power Ready Under Voltage CH2 Output CH2 Output CH3 Output CH3 Output CH1 Output CH1 Output CHC Set High CH1 Output SCP Ready to Protect SCP Enable Time
t PRA t PRA
t CH2 A t CH3A t CH1A t CH1A t SCPA
t PR = 3.2 x 105 C PRDS
t CH2 =(19531.25)CSCP
(
)
Min
Typ
Max Unit
-
t PRA t PRA t CH 2 A 0.8 t CH 2 A 0.8 t CH 2 A 0.8 t CH 2 A 32 t CH 2 A
-
s s s s s s s
Power-Up Sequence Delay (for AAT1101B)
Parameter Test Condition
Under Voltage Power Ready Under Voltage CH2 Output CH2 Output CH1 Output CH1 Output CH3 Output CH3 Output CHC Set Hi CH3 Output SCP Ready to Protect SCP Enable Time
t PRB t PRB t CH2 B
t CH3B t CH1B t CH1B t SCPB
t PR = 3.2 x 10 C PRDS
t CH2 =(19531.25)CSCP
(
5
)
Min
Typ
Max Unit
-
t PRB t PRB tCH2B 0.8 t CH2 B 0.8 t CH2 B 0.8 t CH2 B 32 t CH2 B
-
s s s s s s s
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Advanced Analog Technology, Inc.
AAT1101 Series
Electrical Characteristics, VDD = 3.3V (Unless Otherwise Specified) (Cont.)
Reference Voltage
Parameter Test Conditions Min Typ Max Unit
Reference Voltage Short-Circuit Output Current Input Voltage Regulation Output Regulation Reference Voltage Change with Temperature
VREF I OS VRI VRO VRT
I REF = -1mA , TC = 25 oC VREF = 0 I REF = -1mA , VDD = 2.5V to 6.5V I REF = -0.1mA to - 1 mA
I REF = -1mA (Note 2)
1.237 1.250 1.263
- 30 - 10 -2
V mA mV mV mV
-
2 1 15
5 5 25
EA1 (Error Amplifier for Channel 1)
Parameter Test Condition
Min
Typ
Max Unit
Input Offset Voltage Input Bias Current Input Voltage Range Open-Loop Voltage Gain Unity-Gain Bandwidth
VIO I IB VIR A VO BW1 VOS+
Unity Gain VI = 0.95V to 1.55V R FB = 200k[ VID = 0.1V , I O = -60A VID = -0.1V , I O = 0.2mA VID = -0.1V , VO = 0.2V VID = 0.1V , VO = 1.2V TC = 25 oC
0.95 1.2 0.2
10 60 1 1.0
- 100
15 20 1.55 -
mV nA V dB MHz
Output Voltage Swing VOS- Output Sink Current Output Source Current CH2 Input Reference Voltage I OS+ I OS- Vr 4
V 0.2 - 60
mA A mV
678
700
722
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Advanced Analog Technology, Inc.
AAT1101 Series
Electrical Characteristics, VDD = 3.3V (Unless Otherwise Specified) (Cont.)
Output Stage Parameter
Test Condition I O = -20mA (CH2)
Min
Typ
Max Unit
2.90 1.9 -
3.05 2.2 0.2 0.3 130 50
0.4 0.6 V ns ns V
High-Level Output Voltage
VOH
Low-Level Output Voltage Rise time Fall time
Operating Current Parameter
VOL t RISE t FALL
I O = -40mA (CH1, CH3) I O = 20mA (CH1, CH3) I O = 40mA (CH2) C L = 1000pF C L = 1000pF
Supply Current
I DD-ON I SHDN
Test Condition Duty = 50%, No Load
Min -
Typ 2.5
Max Unit 4.5 mA
-
-
20
A
Note 1: Typical values of all parameters except for VRT (dev) and f T are specified at TC =25 oC. Note 2: The deviation parameter VRT (dev) is defined as the difference between the maximum and minimum values obtained over the recommended free-air temperature range ( -20 oC to 85 oC).
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Advanced Analog Technology, Inc.
AAT1101 Series
Block Diagram AAT1101/AAT1101A Only
E N 13
EO1 IE 1
V d tc 1 = 0 .9 V
L a tc h
OUT1
PW M C 1 EA1 EN2 L a tc h
V r e f = 1 .2 5 V
IE 2
V r 4 = 0 .7 V
EA2
EO2
V d t c 2 = 0 .5 V PW M C 2 EN 13 L atch
OUT2
IE 3
V r e f = 1 .2 5V
EA3
EO3
V d tc 3 = 0 .9 V PW M C 3
OUT3
SDC
V REF
VREF
V ref
UVLO O SC
UVCN
V DD
GND
SDC UVC UVC EN1 EN2 EN3
CHC PRDB
U V PR L atch
U V PR
SC P& S e q C tr l
VDD
VDD
2A 4A
PRDS
V P R T H = 1 . 2 8V
EO1 UVC
V r 3 = 1 .2 5V
SC P
V r1 = 1 .1 5V
EO3
EO2
V = 0 . 2 5V
r2
UVCN
OVS OVLO
OVC SDC
SH D N
SH DN
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Advanced Analog Technology, Inc.
AAT1101 Series
Block Diagram AAT1101B Only
E N 13
EO1 IE 1
V d tc 1 = 0 .9 V
L atch
OUT1
PW M C 1 EA1 EN2 L a tc h
V r e f = 1 .2 5 V
IE 2
V r 4 = 0 .7 V
EA2
EO2
V d t c 2 = 0 .5 V PW M C 2 EN 13 L atch
OUT2
IE 3
V r e f = 1 .2 5V
EA3
EO3
V d tc 3 = 0 .9 V PW M C 3
OUT3
SDC
V REF
V REF
V ref
UVLO O SC
UVCN
V DD
GND O SC CHC
L atch SDC UVC UVC EN1 EN2 EN3
U V PR
SC P& S e q C tr l
VDD
PRDB
U V PR
2A
V r 3 = 1 .2 5V
SC P
EO1
VD D
V r 1 = 1 .1 5 V
EO3
4A
PRDS
V P R T H = 1 . 2 8V
UVC
EO2
V r 2 = 0 .2 5 V
UVCN
SDC
SH D N
SH DN
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Page 11 of 23 V 1.0
Advanced Analog Technology, Inc.
AAT1101 Series
Block Diagram AAT1101C Only
E N 13
EO1 IE 1
V d tc 1 = 0 .9 V
L a tc h
OUT1
PW M C 1 EA1 EN2 L a tc h
V r e f = 1 .2 5 V
IE 2
V r 4 = 0 .7 V
EA2
EO2
V d t c 2 = 0 .5 V PW M C 2 EN 13 L atch
OUT2
IE 3
V r e f = 1 .2 5V
EA3
EO3
V d tc 3 = 0 .9 V PW M C 3
OUT3
SDC
V REF
V REF
V ref
UVLO O SC
UVCN
V DD
GND
SDC UVC UVC EN1 EN2 EN3
CHC PRDB
U V PR L atch
U V PR
SC P& S e q C tr l
VDD
VDD
2A 4A
PRDS
V P R T H = 1 . 2 8V
EO1 UVC
V r 3 = 1 .2 5V
SC P
V r1 = 1 .1 5V
EO3
EO2
V = 0 . 2 5V
r2
UVCN
SDC
SH D N
SH DN
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Advanced Analog Technology, Inc.
AAT1101 Series
Application Circuit AAT1101/AAT1101A Only
k
V DD Vp1 R R C C IE 1 R EO1 OUT1 V DD
VDDP L D
V p1
C
Q
V p3 R
O p t io n a l C ir c u it 2
C IE 3 VDDP L D
R OUT3 VN2 C R IE 2 R V REF Cv
REF
V p3A
C R
Q
V p3
Q
C
A A T1101/ A A T1101A
k
VDDP Q
O p ti o n a l C ir c u it 1
OUT2 VDD PR D B VDDP
V n2
R C
L
PR DS C PRDS CHC Q
PR D B Q
* N o te 3 R o vs SH D N SH D N OVS VDDL SC P C SC P GND VDD
O p ti o n a l C ir c u it 3
O p t io n a l C ir c u it 4
*Note 3: VDD =5V, connects a R OVS =56 k to VDD VDD =3.3V, connects no resistor to VDD Note: All voltage and current values in block diagram (for AAT1101/AAT1101A) are nominal.
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Page 13 of 23 V 1.0
Advanced Analog Technology, Inc.
AAT1101 Series
Application Circuit AAT1101B Only
V DD Vp1 R R C C IE 1 R EO 1 O UT1 V DD
VDDP L D
V p1
C
Q
V p3 R
O p tio na l C irc u it 2
C IE 3 VDDP L D
R OUT3 VN2 Q
V p3A
C R
Q
Vp3
C
R
C IE 2
A A T 11 01B
R V REF C vr ef VDDP Q
O p tio na l C ircu it 1
VDD
OUT2
V n2
R C
PR D B VDDP
L
PR D S C PRDS CHC Q
PR D B Q
SH DN
O SC SH D N O SC R os c C o sc
O p tion al C irc uit 3
SCP C SC P
GND
All voltage and current values in block diagram are nominal.
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Advanced Analog Technology, Inc.
AAT1101 Series
Application Circuit AAT1101C Only
VDD V p1 R R C C IE 1 R EO 1 O UT1 VDD
VDDP L D
V p1
C
Q
Vp3 R
O ptional C ircuit 2
C IE 3 VDDP L D
R O UT3 VN2 C R IE 2 R V REF C vref VDDP Q Q
V p 3A
C R
Q
Vp3
C
A A T 1101C
O ptional C ircuit 1
O UT2 VDD PR D B VDDP
V n2
R C
L
PR D S C PR DS CHC Q
PR D B Q
SH D N
SH DN
O ptional C ircuit 3
GND
SCP C SCP
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Advanced Analog Technology, Inc.
AAT1101 Series
Timing Chart AAT1101
Vr1 Vr3 Vr4
VUPH
VREF
VPRTH
DTC1
SCP
OUT1
OUT3
OUT2
VP3A
OSC
VP3
EO1
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Page 16 of 23 V 1.0
PRDB
VPRDS
VDD
VN2
VP1
Advanced Analog Technology, Inc.
AAT1101 Series
Timing Chart
AAT1101A/AAT1101C
VDD VUPH
VPRTH
DTC1
Vr1
Vr3 Vr4
OUT2
VP3
OUT1
OSC EO1
VPRDS PRDB
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Page 17 of 23 V 1.0
OUT3
SCP
VP3A
Vref
VP1
VN2
Advanced Analog Technology, Inc.
AAT1101 Series
Timing Chart AAT1101B
OUT3
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Page 18 of 23 V 1.0
PRDB
OUT1
Advanced Analog Technology, Inc.
AAT1101 Series
PACKAGE DIMENSION
16-PIN TSSOP
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Page 19 of 23 V 1.0
Advanced Analog Technology, Inc.
AAT1101 Series
PACKAGE DIMENSION (CONT.)
SYMBOLS A A1 A2 b C D E E1 e L y
DIMENSIONS IN MILLIMETERS MIN 1.05 0.05 -----0.20 -----4.900 6.20 4.30 -----0.50 -----TYP 1.10 0.10 1.00 0.25 0.127 5.075 6.40 4.40 0.65 0.60 -----MAX 1.20 0.15 1.05 0.28 -----5.100 6.60 4.50 -----0.70 0.076
DEMINSIONS IN INCHES MIN 0.041 0.002 -----0.008 -----0.1930 0.244 0.170 -----0.020 -----TYP 0.043 0.004 0.039 0.010 0.005 0.1998 0.252 0.173 0.026 0.024 -----MAX 0.047 0.006 0.041 0.011 -----0.2000 0.260 0.177 -----0.028 0.003
0
o
4
o
8
o
0
o
4
o
8o
NOTE: 1. CONTROLLING DIMENSION: MILLIMETERS 2. LEAD FRAME MATERIAL: OLIN C7025/EFTEC 64T 3. DIMENSION "D" DOES NOT INCLUDE MOLD FLASH, TIE BAR BURRS AND GATE BURRS. MOLD FLASH, TIE BAR BURRS AND GATE BURRS SHALL NOT EXCEED 0.006" [0.15 MILLIMETERS] PER END. DIMENSION "E1" DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" [0.25 MILLIMETERS] PER SIDE. 4. DIMENSION "b" DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.003" [0.08 MILLIMETERS] TOTAL IN EXCESS OF THE "b" DIMENSION AT MAXIMUM MATERIAL CONDITION. DAMBAR CANNOT BE LOCATED ON THE LOWER RADIUS OR THE FOOT. MINIMUM SPACE BETWEEN PROTRUSION AND AN ADJACENT LEAD TO BE 0.0028" [0.07 MILLIMETERS]. 5. TOLERANCE: 0.010 [0.25 MILLIMETERS] UNLESS OTHERWISE SPECIFIED. 6. OTHERWISE DIMENSION FOLLOW ACCEPTABLE SPEC. 7. REFERENCE DOCUMENT: JEDEC SPEC MO-153.
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Advanced Analog Technology, Inc.
AAT1101 Series
TAPE AND REEL
PACKING METHOD: 2,500PCS/REEL, 1 REEL/BOX
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Page 21 of 23 V 1.0
Advanced Analog Technology, Inc.
AAT1101 Series
TAPE AND REEL (CONT.)
NOTE: 1. 2. 3. 4. 5. 6.
10 SPROCKET HOLE PITCH CUMULATIVE TOLERANCE 0.2 MILLIMETERS. CAMBER NOT TO EXCEED 1 MILLIMETER IN 100 MILLIMETERS. MATERIAL: ANTI-STATIC BLACK ADVANTEK POLYSTYRENE. A 0 AND B 0 MEASURED ON A PLANE 0.3 MILLIMETERS ABOVE THE BOTTOM OF THE POCKET. K 0 MEASURED FROM A PLANE ON THE INSIDE BOTTOM OF THE POCKET TO THE TOP SURFACE OF THE CARRIER. POCKET POSITION RELATIVE TO SPROCKET HOLE MEASURED AS TRUE POSITION OF POCKET, NOT POCKET HOLE.
PART MARKING
TSSOP16 TOP MARKING
AAT1101 XXXXXX
TSSOP16 BACK MARKING
YYWW
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Advanced Analog Technology, Inc.
AAT1101 Series
ORDERING INFORMATION
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Page 23 of 23 V 1.0

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