AIC1595 AIC [Analog Intergrations Corporation], AIC1595 Datasheet - Page 4

• Manufacturer Part Number: AIC1595
• Description: 2A STEP-DOWN PWM REGULATOR
• Manufacturer: AIC [Analog Intergrations Corporation]

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ANALOG INTEGRATIONS CORPORATION
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
PIN DESCRIPTIONS
PIN 1: IN
PIN 2:OUT
PIN 3: GND


BLOCK DIAGRAM
FB
Supply voltage input 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 currents
needed by the regulator.
Internal switch. The voltage at this pin
switches between (V
proximately –0.5V, with a duty cycle of
approximately V
Ground requires a short, low noise
connection to ensure good load
regulation.
Reference
1.25 V
OUT
Compensation
Circuit
AMP.
/
VIN
IN
-V
2.5V Regulator
.
SAT
) and ap-
COMP.
ON / OFF
KHz OSC
150/300
SHDN
TEL: [phone] FAX:[phone]
www.analog.com.tw
PIN 4: FB
PIN 5: SHDN Allows the switching regulator circuit
Latch
Current
Limit
COMP.
2A STEP-DOWN PWM REGULATOR
Shutdown
Thermal
Driver
Feedback input for fixed-output or
adjustable-output version. Connect di-
rectly to output for fixed operation
version or to a resistor divider for ad-
justable operation versions.
to be shutdown using logic level sig-
nals thus dropping the total input sup-
ply current to approximately 80 A.
Drive it high to disable the reference ,
control circuitry and internal switches.
Drive low or connect to GND for nor-
mal operation.
SPEC NO: DS-1595-P1 03/23/00
OUT
GND
IN
AIC1595
4