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參數(shù)資料
| 型號： | AIC1622COTR |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | High Efficiency Synchronous Step-Up DC/DC Converter |
| 中文描述： | 高效率同步降壓型DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大小： | 456K |
| 代理商： | AIC1622COTR |
AIC1620/AIC1621/AIC1622
7
n
BLOCK DIAGRAM
+
+
+
+
+
OUT
VIN
CLSEL
SHDN
LBO
LBI
REF
FB
Mirror
Q
R
S
F/F
Minimum Off-Time
One Shot
Reference Voltage
GND
LX
BATT
L
1
R1
200
Q3
Q2
Q1
Damping
Switch
Maximum On-Time
OUT
One Shot
C3
220
μ
F
C1
100
μ
F
47
μ
F
0.1
μ
F
C4
0.1
μ
F
n
PIN DESCRIPTIONS
AIC1620/ AIC1621
PIN 1: FB-
Connect to OUT for +3.3V output.
Use a resistor network to set the
output voltage from +1.8V to +4.0V.
Low-battery comparator input. Inter-
nally set to trip at +1.23V.
Open-drain low battery comparator
output. Output is low when V
LBI
is
<1.23V. LBO is high impedance
during shutdown.
PIN 2: LBI-
PIN 3: LBO-
PIN 4: REF-
1.23V reference voltage. Bypass
with a 0.1
μ
F capacitor.
PIN 5: SHDN- Shutdown
low=shutdown.
PIN 6: GND-
Ground
PIN 7: LX-
N-channel and P-channel power
MOSFET drain.
PIN 8: OUT-
Power output. OUT provides boot-
strap power to the IC.
input.
High=operating,
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