View CM2832_287357.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

CM2832
300mA CMOS LDO WITH ENABLE
GENERAL DESCRIPTION
The CM2832 family is a positive voltage linear regulator developed utilizing CMOS technology featured low quiescent current (30A typ.), low dropout voltage, and high output voltage accuracy, making them ideal for battery applications. EN input connected to CMOS has low bias current. The space-saving SOT-23-5 package is attractive for "Pocket" and "Hand Held" applications. These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure under the "Worst" of operating conditions. In application requiring a low noise, regulated supply, place a 1000pF capacitor between Bypass and Ground. The CM2832 is stable with an output capacitance of 2.2F or greater. ! ! ! ! ! ! ! ! !
FEATURES
! Very Low Dropout Voltage Low Current Consumption: Typ. 30A, Max. 35A Output Voltage: 1.8V, 1.9V, 2.2V, 2.5V, 2.7V, 2.8V, 3.0V, 3.3V, 3.5V, 3.6V, and 3.8V High Accuracy Output Voltage: +/- 1.5% Guaranteed 300mA Output Input Range up to 7.0V Thermal Shutdown Current Limiting Compact Package: SOT-23-5 Factory Pre-set Output Voltages Short Circuit Current Fold-Back Low Temperature Coefficient
!
!
APPLICATIONS
! ! ! ! Battery-powered devices Personal communication devices Home electric/electronic appliances PC peripherals
24 Hours Technical Support--WebSIM
Champion provides customers an online circuit simulation tool called WebSIM. You could simply logon our website at www.champion-micro.com for details.
TYPICAL APPLICATIONS
IN
IN
C M 2832 BYP GND
OUT EN
OUT
5V
C1 1uF
C2 1nF
C3 2 .2 u F
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 1
CM2832
300mA CMOS LDO WITH ENABLE
PIN CONFIGURATION
SOT-23-5 Top View
5 4
BYP
GND
2
1
BLOCK DIAGRAM
IN
VIN
3
EN
VOUT
OUT
1uA
Overcurrent Shutdown
Thermal Shutdown
EN BYP
R1
+
Vref = 1.176V
AM P
R2
GND
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 2
CM2832
300mA CMOS LDO WITH ENABLE
ORDERING INFORMATION
Part Number CM2832DIM25 CM2832EIM25 CM2832HIM25 CM2832KIM25 CM2832MIM25 CM2832NIM25 CM2832PIM25 CM2832SIM25 CM2832UIM25 CM2832VIM25 CM2832XIM25 Output Voltage 1.8V 1.9V 2.2V 2.5V 2.7V 2.8V 3.0V 3.3V 3.5V 3.6V 3.8V Temperature Range -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 Package SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5
Note: For other pre-set output voltage requirements, please contact Champion Sales office.
ABSOLUTE MAXIMUM RATINGS
Input Voltage Output Current Output Voltage .................................................. +7V ............................... PD / (VIN - Vo) mA ........................ GND-0.3V to VIN+0.3V ................................................ B
OPERATING RATINGS
Ambient Temperature Range (TA) ......... -40 to +85 Junction Temperature Range ........... -40 to +125
ESD Classification
THERMAL INFORMATION
Parameter Maximum Thermal Resistance (jc) SOT-23-5 160 Internal Power Dissipation (PD) SOT-23-5 320 (T = 100) Maximum Junction Temperature 150 Maximum Lead Temperature (10 Sec) 300 Caution: Stress above the listed absolute rating may cause permanent damage to the device. Unit /W /W
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 3
CM2832
300mA CMOS LDO WITH ENABLE
ELECTRICAL CHARACTERISTICS
TA = +25; unless otherwise noted CM2832 Min. Note 1 IO = 1mA IO = 300mA, VOUT=VO(NOM)-1.5%, 1.2VNote 1. VIN(MIN) = VOUT + VDROPOUT
Parameter Input Voltage Output Voltage Accuracy Dropout Voltage Output Current Current Limit Short Circuit Current Quiescent Current Ground Pin Current Line Regulation Load Regulation Over Temperature Shutdown Over Temperature Hysteresis VOUT Temperature Coefficient Power Supply Rejection
Symbol VIN VOUT VDROPOUT IO ILIM ISC IQ IGND REGLINE REGLOAD OTS OTH TC
Test Conditions
Typ.
Max. 7 1.5 1300 800 300
Unit V % mV mV mA mA
-1.5
VOUT > 1.2V VOUT > 1.2V VOUT < 0.95V IO = 0mA IO = 1mA to 300mA IOUT=5mA, VIN=VOUT+1 to VOUT+2 VOUT <= 3.0V VOUT > 3.0V
300 35 50 0.15 0.3 1
mA A A % % % ppm/ dB
IO=1mA to 300mA
f=1kHz f=10kHz f=100kHz f=1kHz f=10kHz f=100kHz CO=2.2F CO=100F CO=2.2F CO=100F
60 50 40 75 55 30 30 20 30 20 2.0 1.0 VIN/2+0.8V 0 VIN/2-0.8V 3.0 0.1 3.0 VIN Vrms Vrms A A A V V dB
PSRR
eN eN ISD IEH IEL VEH VEL
f=10Hz to 100kHz IO = 10mA, CBYP=0F f=10Hz to 100kHz IO = 10mA, CBYP=0.01F
VIN=5.0V, VOUT=0V, VEN < VEL VEN=VIN, VIN=2.6V to 7V VEN=VIN, VIN=2.6V to 7V VIN=2.6V to 7V VIN=2.6V to 7V
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 4
CM2832
300mA CMOS LDO WITH ENABLE
DETAILED DESCRIPTION
The CM2832 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, thermal shutdown, and short circuit protection. The P-channel pass transistor receives data from the error amplifier, over-current shutdown, short output protection, and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current and Thermal shutdown circuits become active when the junction temperature exceeds 150, or the current exceeds 300mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120. The CM2832 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The CM2832 also incorporates current fold-back to reduce power dissipation when the output is short-circuited. This feature becomes active when the output drops below 1.05V, and reduces the current flow by 65%. Full current is restored when the voltage exceeds 0.95V.
ENABLE
The Enable pin normally floats high. When actively, pulled low, the PMOS pass transistor shut off, and all internal circuits are powered down. In this state, the quiescent current is less than 2A. This pin behaves much like an electronic switch.
EXTERNAL CAPACITOR
The CM2832 is stable with an output capacitor to ground of 2.2F or greater. It can keep stable even with higher or poor ESR capacitors. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should be larger than 0.1F to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A "quiet" ground termination is desirable.
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 5
CM2832
300mA CMOS LDO WITH ENABLE
TYPICAL ELECTRICAL CHARACTERISTICS
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 6
CM2832
300mA CMOS LDO WITH ENABLE
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 7
CM2832
300mA CMOS LDO WITH ENABLE
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 8
CM2832
300mA CMOS LDO WITH ENABLE
PACKAGE DIMENSION
SOT-23-5 (M25)
D
5 4
b1 c1
With Plating
A
c
A1 A2
E1
b
Base Metal
Section B-B
E
b b1 c c1 D E
1
2
3
e e1
E1
b
L L1 e e1
1
1 2
A2
A
2
A1
See Section B-B
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
L L1
Page 9
CM2832
300mA CMOS LDO WITH ENABLE
NUMBERING SCHEME
Ordering Number: CM2832XYZ (note1)
note1: CM2832 : 300mA CMOS LDO with enable X : Suffix for voltage output (note 2) Y : Suffix for Temperature Range (note 3) Z : Suffix for Package Type (note 4) note 2: see CMOS LDO Voltage Suffix Table CM2832 will provide options of A(1.5V), D (1.8V), E(1.9V),, H(2.2V), K(2.5V), M(2.7V), N(2.8V), P(3.0V), S(3.3V), U(3.5V), V(3.6V), X(3.8V) note 3: Y= I : -40~+85
(only I grade support for all CMOS LDOs)
note 4: Z is single alphabet with or without digits M25 : SOT-25 (TR only)
CMOS LDO Voltage Suffix Table Output Voltage 1.5V 1.6V 1.7V 1.8V 1.9V 2.0V 2.1V 2.2V 2.3V 2.4V 2.5V 2.6V 2.7V 2.8V 2.9V Suffix A B C D E F G H I J K L M N O Output Voltage 3.0V 3.1V 3.2V 3.3V 3.4V 3.5V 3.6V 3.7V 3.8V 3.9V 4.0V Suffix P Q R S T U V W X Y Z
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 10
CM2832
300mA CMOS LDO WITH ENABLE
IMPORTANT NOTICE
Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. CMC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for Use of CMC products in such applications is In order to minimize risks associated with the customer's applications, the use in life-support applications, devices or systems or other critical applications. understood to be fully at the risk of the customer. customer should provide adequate design and operating safeguards.
HsinChu Headquarter
5F, No. 11, Park Avenue II, Science-Based Industrial Park, HsinChu City, Taiwan T E L : +886-3-567 9979 F A X : +886-3-567 9909
Sales & Marketing
11F, No. 306-3, SEC. 1, Ta Tung Road, Hsichih, Taipei Hsien 221, Taiwan T E L : +886-2-8692 1591 F A X : +886-2-8692 1596
2003/11/20 Rev. 1.2
Champion Microelectronic Corporation
Page 11

▲Up To Search▲

Price & Availability of CM2832

	To Download CM2832 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .