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GSC2596M Datasheet(PDF) 2 Page - GTM CORPORATION

Part # GSC2596M
Description  150 KHz, 2A PWM Step-Down DC/DC Converter
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Manufacturer  GTM [GTM CORPORATION]
Direct Link  http://www.gtm.com.tw
Logo GTM - GTM CORPORATION

GSC2596M Datasheet(HTML) 2 Page - GTM CORPORATION

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GSC2596M
Page: 2/6
ISSUED DATE :2006/03/08
REVISED DATE :2006/05/17B
Pin Function
Pin Name
Pin#
Function
VIN
1
This is the positive input supply for the IC switching regulator. A suitable input bypass capacitor
must be present at this pin to minimize voltage transients and to supply the switching current
needed by regulator.
Output
2
Internal switch. The voltage at this pin switches between (+VIN - VSAT) and approximately -0.5V,
with a duty cycle of approximately VOUT/VIN. To minimize coupling to sensitive circuitry, the PC
board copper area connected to this pin should be keep to a minimum.
Feedback(FB)
3
Senses the regulated output voltage to complete the feedback loop
.
ON/OFF(SD)
4
Allows the switching regulator circuit to be shutdown using logic level signals. Thus drop the total
input supply current to approximately 150 A. Pulling this pin below a threshold voltage of
approximately 1.3V turns the regulator on, and pulling this pin above 1.3V (up to a maximum of
18V) shuts the regulator down. If this shutdown feature is not needed, ON/OFF pin can be wired to
the ground pin.
Ground
5,6,7,8 Circuit ground
Absolute Maximum Ratings
Parameter
Symbol
Ratings
Unit
Supply Voltage
VCC
24
V
ON/OFF Pin Input Voltage
VSD
-0.3 ~ +18
V
Feedback Pin Voltage
VFB
-0.3 ~ +18
V
Output Voltage to ground
VOUT
-1
V
Power Dissipation
PD
Internally Limited
W
Storage Temperature
TST
-65 ~ +150
:
Operating temperature
TOP
-40 ~ +125
:
Operating Voltage
VOP
+4.5 ~ +22
V
GSC2596M Electrical Characteristics
Specifications in boldface type are for full operating temperature range. The other type are for TJ=25 : .
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Feedback
VFB
5 VIN 22V, 0.2A ILOAD 2A
VOUT=3V
1.180/1.168 1.230 1.280/1.292
V
Efficiency
VIN=12V, ILOAD=2A, VOUT=3V
76
%
GSC2596M-33 Electrical Characteristics
Specifications in boldface type are for full operating temperature range. The other type are for TJ=25 : .
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Feedback
VFB
5.5V VIN 22V
0.2A ILOAD 2A
3.168/3.135
3.3
3.432/3.465
V
Efficiency
VIN=12V, ILOAD=2A
78
%
GSC2596M-50 Electrical Characteristics
Specifications in boldface type are for full operating temperature range. The other type are for TJ=25 : .
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Feedback
VFB
8V VIN 22V
0.2A ILOAD 2A
4.80/4.75
5.0
5.20/5.25
V
Efficiency
VIN=12V, ILOAD=2A
83
%
GSC2596M-12 Electrical Characteristics
Specifications in boldface type are for full operating temperature range. The other type are for TJ=25 : .
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Feedback
VFB
15V VIN 22V
0.2A ILOAD 2A
11.52/11.40
12
12.48/12.60
V
Efficiency
VIN=16V, ILOAD=2A
90
%


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