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VOLTAGE REGULATOR. GSC2176 Datasheet

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VOLTAGE REGULATOR. GSC2176 Datasheet






GSC2176 REGULATOR. Datasheet pdf. Equivalent




GSC2176 REGULATOR. Datasheet pdf. Equivalent





Part

GSC2176

Description

CMOS POSITIVE VOLTAGE REGULATOR



Feature


www.DataSheet4U.com ISSUED DATE :2006/03 /07 REVISED DATE : GSC2176 Description 6 0 0 m A C M O S P o s i t i v e Vo l t a g e R e g u l a t o r The GSC217 6 of positive, linear regulators featur e low ground current (30 A typ.) with l ow dropout voltage, making then ideal f or battery applications. The space-savi ng SOP-8 package is attractive for “P ocket” and “Hand Hel.
Manufacture

GTM

Datasheet
Download GSC2176 Datasheet


GTM GSC2176

GSC2176; d” applications. These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure un der the “Worst” of operating condit ions. The GSC2176 is stable with an out put capacitance of 2.2 F or greater. F eatures Applications Very Low Dropout Voltage Guaranteed 600mA output Accura te to within 1.5% Over-Temperature Shut down Current Limiting Sh.


GTM GSC2176

ort Circuit Current Fold-back Low Temper ature Coefficient Power-saving Shutdown Mode User Adjustable Output Voltages Functional Block Diagram Package Dimen sions Battery Powered Widgets Instrume ntation Wireless Devices Cordless Phone s PC Peripherals Portable Electronics REF. A B C D E F Millimeter Min. Max. 5.80 4.80 3.80 0° 0.40 0.19 6.20 5.00 4.00 8° 0.90 0.25 .


GTM GSC2176

REF. M H L J K G Millimeter Min. Max. 0 .10 0.25 0.35 0.49 1.35 1.75 0.375 REF. 45° 1.27 TYP. Typical Application Ci rcuit VOUT=1.215*(1+R1/R2) C2 is unnec essary if R1 or R2 <20K R1 and R2 use r esistance value within 1% accuracy for correct VOUT GSC2176 Page: 1/7 ISSUE D DATE :2006/03/07 REVISED DATE : Abso lute Maximum Ratings Parameter Input Ma x Voltage Output Cu.

Part

GSC2176

Description

CMOS POSITIVE VOLTAGE REGULATOR



Feature


www.DataSheet4U.com ISSUED DATE :2006/03 /07 REVISED DATE : GSC2176 Description 6 0 0 m A C M O S P o s i t i v e Vo l t a g e R e g u l a t o r The GSC217 6 of positive, linear regulators featur e low ground current (30 A typ.) with l ow dropout voltage, making then ideal f or battery applications. The space-savi ng SOP-8 package is attractive for “P ocket” and “Hand Hel.
Manufacture

GTM

Datasheet
Download GSC2176 Datasheet




 GSC2176
www.DataSheet4U.com
ISSUED DATE :2006/03/07
REVISED DATE :
GSC2176
600m A CMO S Po si ti ve Vol tag e Regu l ato r
Description
The GSC2176 of positive, linear regulators feature low ground current (30 A typ.) with low dropout voltage,
making then ideal for battery applications. The space-saving SOP-8 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.
The GSC2176 is stable with an output capacitance of 2.2 F or greater.
Features
Very Low Dropout Voltage
Guaranteed 600mA output
Accurate to within 1.5%
Over-Temperature Shutdown
Current Limiting
Short Circuit Current Fold-back
Low Temperature Coefficient
Power-saving Shutdown Mode
User Adjustable Output Voltages
Applications
Battery Powered Widgets
Instrumentation
Wireless Devices
Cordless Phones
PC Peripherals
Portable Electronics
Package Dimensions
Functional Block Diagram
Typical Application Circuit
GSC2176
REF.
A
B
C
D
E
F
Millimeter
Min. Max.
5.80
6.20
4.80
5.00
3.80
4.00
0° 8°
0.40
0.90
0.19
0.25
REF.
M
H
L
J
K
G
Millimeter
Min. Max.
0.10
0.25
0.35
0.49
1.35
1.75
0.375 REF.
45°
1.27 TYP.
VOUT=1.215*(1+R1/R2)
C2 is unnecessary if R1 or R2 <20K
R1 and R2 use resistance value within 1% accuracy
for correct VOUT
Page: 1/7




 GSC2176
ISSUED DATE :2006/03/07
REVISED DATE :
Absolute Maximum Ratings
Parameter
Input Max Voltage
Output Current
Output Voltage
Operating Ambient Temperature
Junction Temperature
Maximum Junction Temperature
Internal Power Dissipation
EDS Classification
Symbol
VIN
IOUT
VOUT
Topr
Tj
Tj Max
PD
Ratings
8
PD/( VIN- VO)
Gnd-0.3 to VIN+0.3
-40 ~ +85
-40 ~ +125
150
810
B
Unit
V
mA
V
mW
Electrical Characteristics TA=25 unless otherwise noted
Parameter
Symbol
Condition
Min TYP Max Unit
Output Voltage
Output Current
VOUT(E)
(Note1)
IO
IO=1mA, VIN=VOUT(T)+2V
VO>1.2V
-1.5
VOUT(T)
(Note2)
600 -
1.5
-
%
mA
Current Limit
ILIM
VO>1.2V
600 800
-
mA
Short Circuit Current
ISC
VIN=VOUT(T)+1V, VO < 0.8V
-
300 600
mA
Load Regulation
REGLOAD
VIN=VOUT(T)+2V, IO=1mA to 600mA
-
0.2
1
%
Dropout Voltage
VDROPOUT
IO=600mA
VO=VOUT(E)-2%
1.5V<VOUT(T) 2.0V
2.0V<VOUT(T) 2.8V
2.8V<VOUT(T)
-
-
-
- 1400
- 800 mV
- 600
Ground Pin Current
IGND
VIN=VOUT(T)+2V, IO=1mA to 600mA
-
30
-
A
Line Regulation
REGLINE
IO=1mA
VIN=VOUT(T)+1 to
VOUT(T)+2
VOUT(T)<2.0V
VOUT(T) 2.0V
- - 0.15
%
- 0.02 0.1
Input Voltage
VIN
Note3
-
7
V
Over Temperature Shutdown
OTS
- 150 -
Over Temperature Hysterisis
OTH
- 30 -
Output Voltage
Temperature Coefficient
TC
- 30 - ppm/
Power Supply Rejection
PSRR
Io=100mA
Co=2.2 F
f=1kHz
f=10kHz
f=100kHz
- 50 -
- 20 -
- 15 -
dB
Output Voltage Noise
eN f=10Hz~100kHz, Io=10mA, Co=2.2 F - 30 - Vrms
ADJ Reference Voltage
VREF
1.203 1.215 1.227
V
EN Input Threshold
VEH
VEL
VIN=2.7V to 7V
VIN=2.7V to 7V
2.0 - VIN
V
0
- 0.4
V
EN Input Bias Current
IEH
IEL
VEN=VIN, VIN=2.7V to 7V
VEN= 0V, VIN=2.7V to 7V
- - 0.1 A
- - 0.5 A
Shutdown Supply Current
ISD
VIN=5V, VO=0V, VEN<VEL
- 0.5 0.1
A
Note 1: VOUT (E) =Effective Output Voltage (i.e. the output voltage when “VOUT (T) + 2.0V” is provided at the VIN pin while maintaining a
certain IOUT value).
2: VOUT (T) =Specified Output Voltage
3: VIN (MIN) =VOUT+VDROPOUT
GSC2176
Page: 2/7




 GSC2176
ISSUED DATE :2006/03/07
REVISED DATE :
Ordering Information ( contd. )
Part Number
GSC2176-AD
Marking
6GAD2
XXXX
Output Voltage
Adjustable
Part Number
Marking
Output Voltage
Detailed Description
The GSC2176 of COMS regulator contain a PMOS pass transistor, voltage reference, error amplifier,
over-current protection, and thermal shutdown.
The P-channel pass transistor receives data from the error amplifier, over-current shutdown, 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 600mA. During thermal shutdown, the output voltage remains low. Normal
operation is restored when the junction temperature drops below 120 .
The GSC2176 switches from voltage mode to current mode when the load exceeds the rated output current.
This prevents over-stress. The GSC2176 also incorporates current fold-back to reduce power dissipation when
the output is short circuited. This feature becomes active when the output drops below 0.8 volts, and reduces
the current flow by 65%. Full current is restored when the voltage exceeds 0.8 volts.
External Capacitors
The GSC2176 is stable with an output capacitance to ground of 2.2 F or greater. Ceramic capacitors have the
lowest ESR, and will offer the best AC performance. Conversely, Aluminum Electrolytic capacitors exhibit the
highest ESR, resulting in the poorest AC response. Unfortunately, large value ceramic capacitors are
comparatively expensive. One option is to parallel a 0.1uF ceramic capacitor with a 10uF Aluminum Electrolytic.
The benefit is low ESR, high capacitance, and low overall cost.
A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should
be at least 0.1 F to have a beneficial effect.
All capacitors should be placed in close proximity to the pins. A “Quiet” ground termination is desirable. This
can be achieved with a “Star” connection.
Enable
The Enable pin normally floats high. When actively, pulled low, the PMOS pass transistor shuts off, and all
internal circuits are powered down. In this state, the quiescent current is less than 1 A. This pin behaves much
like an electronic switch.
ADJ
The ADJ pin is the positive input to the error amplifier which, due to the PMOS pass element inversion, means
it is actually the negative input of the LDO feedback loop. The feedback works to keep the voltage at the ADJ
pin 1.215V with respect to ground. Since the internal circuitry at the ADJ pin is essentially an ESD protected
CMOS gate the input current at the ADJ pin is virtually zero.
GSC2176
Page: 3/7






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