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參數(shù)資料
| 型號(hào)： | AIC1595B-33CT |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | 2A STEP-DOWN PWM REGULATOR |
| 中文描述： | 第2A降壓脈寬調(diào)制調(diào)節(jié)器 |
| 文件頁數(shù)： | 4/5頁 |
| 文件大小： | 74K |
| 代理商： | AIC1595B-33CT |
AIC1595
2A STEP-DOWN PWM REGULATOR
SPEC NO: DS-1595-P1 03/23/00
ANALOG INTEGRATIONS CORPORATION
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. TEL: (8863)577-2500 FAX:(8863)577-2510
www.analog.com.tw
4
!
PIN DESCRIPTIONS
PIN 1: IN 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.
PIN 2:OUT
Internal switch. The voltage at this pin
switches between (V
IN
-V
SAT
) and ap-
proximately –0.5V, with a duty cycle of
approximately V
OUT
/
VIN
.
PIN 3: GND
Ground requires a short, low noise
connection to ensure good load
regulation.
PIN 4: FB
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.
PIN 5: SHDN Allows the switching regulator circuit
to be shutdown using logic level sig-
nals thus dropping the total input sup-
ply current to approximately 80
μ
A.
Drive it high to disable the reference ,
control circuitry and internal switches.
Drive low or connect to GND for nor-
mal operation.
!
BLOCK DIAGRAM
IN
FB
OUT
COMP.
COMP.
GND
2.5V Regulator
1.25 V
Reference
Driver
Compensation
Circuit
SHDN
ON / OFF
AMP.
150/300
KHz OSC
Current
Limit
Latch
Thermal
Shutdown
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