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SPX2967
400mA Low Dropout Voltage Regulator
FEATURES Output voltage tolerance 2% 400mA current capability Low Dropout Voltage Very low standby current consumption Input voltage up to 40V Overvoltage protection up to 60V ( 400ms) Reset function down to 1V output voltage ESD protection up to 2000V Adjustable reset time On/Off logic Over temperature protection Reverse polarity protection Short-circuit protection Wide temperature range
SPX2967
SPX2967
7 Pin TO-220
7 Pin TO-263
1234567
1234
5 67
GND
E2 RO
I E2
RO GND D
E6
Now Available in Lead Free Packaging
APPLICATIONS Automotive Industrial Wireless Base Station DESCRIPTION
Sipex's SPX2967 is a 5 volt low dropout voltage regulator for automotive applications. It supplies output current at 400mA. The IC has short-circuit protection and has an overtemperature protection circuit. The part is available in 7 pin TO-220 and TO-263 packages. TYPICAL APPLICATION CIRCUIT
Input
I Q
Q
+ E2; eg from terminal 15 Reset to C
470nF
Inhibit
SPX2967
RO SO
100nF
22F
RI
GND
Hold
From C RS2
0.1F
Date: 8/23/04
SPX2967 400mA Low Dropout Voltage Regulator
(c) Copyright 2004 Sipex Corporation
1
D E2 Q
I
5V Ouptut
APPLICATIONS INFORMATION The IC regulates an input voltage VI in the range of 5.5 V < VI <40 V to a nominal output voltage of VQ= 5.0V. A reset signal is generated for an output voltage of VQ < VRT (typ. 4.5V). The reset delay can be set with an external capacitor. The device has two logic inputs. A voltage of VE2 >4.0V given to the E2-pin (e.g. by ignition) turns the device on. Depending on the voltage on pin E6 the IC may be hold in active-state even if VE2 goes down to low level. This makes it simple to implement a self-holding circuit without external components. When the device is turned off, the output voltage drops to 0V and current consumption tends towards 0 A. DESIGN NOTES FOR EXTERNAL COMPONENTS The input capacitor CI is necessary for compensation of line influences. The resonant circuit consisting of lead inductance and input capacitance can be damped by a resistor of approximately 1 in series with CI . The output capacitor is necessary for the stability of the regulating circuit. Stability is guaranteed at values of 22F and an ESR of less than 3 within the operating temperature range. CIRCUIT DESCRIPTION The control amplifier compares a reference voltage, which is kept highly accurate by resistance adjustment, to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control as a function of the load current prevents and oversaturation of the power element. The reset output RO is in high state if the voltage on the delay capacitor CD greater than or equal to VUD. The delay capacitance CD is charged with the current ID for output voltages greater than the reset threshold VRT. If the output voltage gets lower than VRT a fast discharge of the delay capacitor CD sets in and as soon as VCD gets lower than VLD the reset output RO is set to low-level. The reset delay can be set within wide range by dimensioning the capacitance of the external capacitor. PIN DESCRIPTION
PIN NUMBER 1 2 3 4 5 6 7 PIN NAME I E2 RO GND D E6 Q DESCRIPTION Input; Block to GND directly at the IC with a ceramic capacitor. Inhibit; Device is turned on by High signal on this pin; internal pulldown resistor of 100k Reset Output; The open-collector output is internally linked to Q via a 30k resistor. Keep it open if not needed. Ground; connected to rear of chip Reset Delay; connect via capacitor to GND for setting delay Hold; see truth table for function; this input is connected to output voltage via a pull up resistor of 50k 5V Output; block to GND with 22F capacitor, ESR < 3
Date: 8/23/04
SPX2967 400mA Low Dropout Voltage Regulator
(c) Copyright 2004 Sipex Corporation
2
TRUTH TABLE FOR TURN-ON/TURN -OFF LOGIC Pin 2, Inhibit
L H H X L L
Pin 6, Hold
X X L L L H
VQ
OFF ON ON ON ON OFF
Comments
Initial state, Inhibit internally pulled up Regulator switched on via Inhibit, by ignition for example Hold clamped active to ground by controller while Inhibit is still high. Previous state remains, even ignition is shut off: self-holding state Ignition shut off while regulator is in self-holding state Regulator shut down by releasing of Hold while Inhibit remains Low, final state. No active clamping required by external selfholding circuit (C) to keep regulator in off-state
Pin 2, Inhibit: E2 Enable function, active High Pin 6, Hold: E6 Hold and release function, active Low ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.
Limit Values Parameter
Input Voltage Voltage Current Reset Output Voltage Current Reset Delay Voltage Current Output Voltage Current Inhibit Voltage Current
Date: 8/23/04
Symbol
Unit
Notes
min.
max.
VI VI II
-42 -
42 60 -
V V -
T 400ms Internally Limited
VRO IRO
-0.3 -
7 -
V -
Internally Limited
VD VD
-0.3 -
42 -
V -
-
VQ IQ
-0.3 -
7 -
V -
Internally Limited
VE2 IE2
-42 -5
42 5
V mA
t 400ms
(c) Copyright 2004 Sipex Corporation
SPX2967 400mA Low Dropout Voltage Regulator
3
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.
Parameter
Hold Voltage Current GND Current Temperatures Junction Temperature Storage Temperature Operating Range Input Voltage Thermal Resistance Junction Ambient Junction-case Junction-case Junction Ambient Junction-case Junction-case
Symbol
Limit Values
Unit
Notes
VE6 IE6
-0.3 -
7 -
V mA
Internally Limited
IGND
-0.5
-
A
-
TJ Tstg
-40 -50
150 150
C C
-
VI
5.5
40
V
-
Rthja Rthjc Zthjc Rthja Rthjc Zthjc
-
65 6 2 70 6 2
K/W K/W K/W K/W K/W K/W
7 Pin TO220 package 7 Pin TO220 package 7 Pin TO220 package 7 Pin TO263 package 7 Pin TO263 package 7 Pin TO263 package
Date: 8/23/04
SPX2967 400mA Low Dropout Voltage Regulator
(c) Copyright 2004 Sipex Corporation
4
ELECTRICAL CHARACTERISTICS
VIN = 13.5V; -40C < TJ < 125C. The denotes the specifications which apply over the full operating temperature range, unless
otherwise specified.
Parameter
Output Volatage Output Volatage Output Current Limiting Current Consumption Iq= II- IQ Current Consumption Iq= II- IQ Current Consumption Iq= II- IQ Current Consumption Iq= II- IQ Current Consumption Iq= II- IQ Drop Voltage Load Regulation Supply-voltage regulation Supply-voltage rejection Longterm stability
Sym
VQ VQ IQ Iq Iq Iq Iq Iq VDR VQ VQ VQ VQ
Min
4.9 4.9 500 -
Typ
5.0 5.0 1.0
Ma x
5.1 5.1 50 10
Units
V V mA A A
Conditions
5mA IQ 400mA 6V VI 26V 5mA IQ 150mA 6V VI 40V Tj = 25 C IC turned off Tj = 25 C IC turned off IQ =5mA IC turned on IQ = 400mA IQ = 400mA Vr = 5V IQ = 400mA (note 1) 5mA IQ 400mA VI = 6 to 36V IQ = 5mA fr = 100Hz Vr = 0.5V 1000 h
-
1.3
4
mA
-
0.3 15 54 0
60 80 0.6 50 25 -
mA mA V mV mV dB mV
Note 1: Drop voltage = VI - VQ measured when the output voltage has dropped 100mV from the nominal value obtained at 13.5V input.
Date: 8/23/04
SPX2967 400mA Low Dropout Voltage Regulator
(c) Copyright 2004 Sipex Corporation
5
ELECTRICAL CHARACTERISTICS
VIN = 13.5V; -40C < TJ < 125C. The denotes the specifications which apply over the full operating temperature range, unless
otherwise specified.
Parameter
Reset Generator Switching Threshold Reset High Level Saturation Voltage Internal Pull up resistor Saturation Voltage Charge Current Upper delay switching threshold Delay Time Lower delay switching threshold Reset reaction time Inhibit Turn on voltage Turn off voltage Pull down Resistor Hysteresis Input Current Hold Voltage Turn off Voltage Pull up Resistor Overvoltage Protection Turn off Voltage Turn on Hysteresis
Sym
Min
Typ
Ma x
Units Conditions
VRT VRO, SAT VRO VD, SAT ID VUD
4.2 4.5 8 2.6 -
4.5 0.1 30 50 15 3 20 0.43 2
4.8 0.4 100 25 3.3 -
V V V k mV V ms V S
Rext = RR = 4.7k (note 2) VQ tD
VLD tRR
Cd = 100nF C = 100nF
VU, INH VL, INH RINH VINH IINH VU, HOLD VL, HOLD RHOLD
2 50 0.2 30 60 20
3 100 0.5 35 35 70 50
4 200 0.8 100 40 80 100
V V k V % % k
IC turned on IC turned off VINH= 4V Referred to VQ Referred to VQ -
VL, OV VL, OV
42 2
44 -
46 6
V V
-
Note 2: The reset output is low for 1V < VQ < VRT
Date: 8/23/04
SPX2967 400mA Low Dropout Voltage Regulator
(c) Copyright 2004 Sipex Corporation
6
TEST CIRCUIT
II
I
Q
IQ
1000F VI
470nF
SPX2967
RO D ID VC GND IGND HOLD
22F
4.7 k
VQ
Inhibit
IRO VR
VE2
BLOCK DIAGRAM
Temperature Sensor
Saturation Control Protection Circuit
Input
I
Q
5V Output
Control Amplifier Adjustment Bandgap Reference
D Buffer Reset Generator RO
Reset Delay Reset Output
Turn-On/Turn-OFF Logic
E2 Inhibit
E6 Hold
GND Ground
Date: 8/23/04
SPX2967 400mA Low Dropout Voltage Regulator
(c) Copyright 2004 Sipex Corporation
7
TIME RESPONSE
VI
t
VINH VU,INH VL,INH VQ VRT I dV =D CD dt
t
t
VD VUD VLD VD, SAT VRO V RO,SAT
tRR
t tD
t Power on Reset Thermal Shutdown Voltage Drop Undervoltage Secondary Lead Bounce at Input Spike at Output Shutdown
Date: 8/23/04
SPX2967 400mA Low Dropout Voltage Regulator
(c) Copyright 2004 Sipex Corporation
8
ENABLE AND HOLD BEHAVIOR
V I
t VE2 VU,INH VL,INH VE6 VU, HOLD 2) VL, HOLD VQ VQ, NOM VRT V D VUD VLD VD, SAT V RO tD tRR 8) t 4) <10us <10us 10) 7) t 1) 5) t
6)
t
VRO, SAT
3)
9) t
1) Enable Device 2) Hold Inactive 3) Power-on reset 4) Hold active, clamped to GND by external uC 5) Enable inactive, clamped by int. pull down resistor.
6) Pulse width smaller than 1us. 7) Hold inactive, released by uC. 8) Voltage controller shutdown. 9) Output-low reset 10) No switch via VE6 possible after E6 was released to VE6 > VE6, REL for more than 4 us.
Date: 8/23/04
SPX2967 400mA Low Dropout Voltage Regulator
(c) Copyright 2004 Sipex Corporation
9
PACKAGE: 7 PIN TO-220
0.405+/-0.010 [10.29+/-0.25]
0.400+/-0.10 [10.16+/-0.25]
3 TYP SEATING PLANE 0.18 +/- 0.01 [4.57 +/-0.25] 0.050 [1.27]
0.108+/-0.10 [2.64+/-0.25] 0.25+/-0.01 [6.35+/-0.25] 0.034+/-0.005 [8.64+/-0.25]
0.854+/-0.03 [21.69+/-0.76]
7
0.049 [1.24]
0.026 [0.66] TYP 0.3 [7.62] REF
0.050 [1.27] TYP
0.105 [2.67] TYP 0.177+/-0.02 [4.50+/-0.51] TYP
Date: 8/23/04
SPX2967 400mA Low Dropout Voltage Regulator
(c) Copyright 2004 Sipex Corporation
10
0.972+/-0.03 [24.69+/-0.76]
PACKAGE: 7 PIN TO-263
SEATING PLANE
(DATUM A)
A C2
H
E 1234567 L2
(E)
c
E
L1
D1
5X b 4X e
E1
7 PIN TO-263 JEDEC TO-263 (BB) Variation A A1 b c c2 D1 E E1 e H L L1 L2 L3
Dimensions in (mm) MIN .160 0 .020 .015 .045 .270 .380 .245 NOM MAX .067 BSC .575 .070 .625 .110 .066 .070
c
.190 .010 .039 .029 .023 .420 -
0-8 L3
L
(b)
WITH PLATING
.010 BSC
BASE METAL CONTACT AREA
7 PIN TO-263
Date: 8/23/04
SPX2967 400mA Low Dropout Voltage Regulator
(c) Copyright 2004 Sipex Corporation
11
ORDERING INFORMATION Part number Output Voltage Package Type SPX2967U ......................... 5.0V ............................................................. 7 Pin TO-220 SPX2967T .......................... 5.0V ............................................................. 7 Pin TO-263
Available in lead free packaging. To order add "-L" suffix to part number. Example: SPX2967U = standard; SPX2967U-L = lead free
Corporation
ANALOG EXCELLENCE
Sipex Corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.
Date: 8/23/04
SPX2967 400mA Low Dropout Voltage Regulator
(c) Copyright 2004 Sipex Corporation
12

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