参数资料
型号: LTC3203BEDD-1#PBF
厂商: Linear Technology
文件页数: 6/16页
文件大小: 0K
描述: IC REG BST SWITCHED CAP 5V 10DFN
标准包装: 121
类型: 升压(升压),切换电容(充电泵)
输出类型: 固定
输出数: 1
输出电压: 5V
输入电压: 2.7 V ~ 5.5 V
PWM 型: Burst Mode?
频率 - 开关: 900kHz,1MHz
电流 - 输出: 500mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
包装: 管件
供应商设备封装: 10-DFN(3x3)
LTC3203/LTC3203-1
LTC3203B/LTC3203B-1
PI FU CTIO S
C2 + (Pin 1): Flying Capacitor 2 Positive Terminal (C2).
V OUT (Pin 2): Regulated Output Voltage. V OUT should be
bypassed with a low ESR ceramic capacitor as close to the
pin as possible for best performance. The capacitor should
have greater than 4.7 μ F capacitance under all conditions.
C1 + (Pin 3): Flying Capacitor 1 Positive Terminal (C1).
SHDN (Pin 4): Active Low Shutdown Input. A low on SHDN
puts the LTC3203/LTC3203-1/LTC3203B/LTC3203B-1 in
low current shutdown mode. Do not float the SHDN pin.
V SEL (Pin 5) (LTC3203-1/LTC3203B-1): Output Voltage
Selection Input. A logic 0 at V SEL sets the regulated V OUT
to 4.5V; and a logic 1 sets the regulated V OUT to 5V. Do not
float the V SEL pin.
FB (Pin 5) (LTC3203/LTC3203B): Feedback. The voltage
on this pin is compared to the internal reference voltage
(0.91V) by the error amplifier to keep the output in
MODE (Pin 6): Mode Selection Input. The LTC3203/
LTC3203-1/LTC3203B/LTC3203B-1 operates in 1.5x
mode if the MODE pin is greater than V MODEH , which
gives higher charge pump efficiency. If the MODE pin is
less than V MODEL , the LTC3203/LTC3203-1/LTC3203B/
LTC3203B-1 operates in 2x mode, which gives a higher
charge pump boost voltage.
V IN (Pin 7): Input Supply Voltage. V IN should be bypassed
with a more than 2.2 μ F low ESR ceramic capacitor to GND.
C2 – (Pin 8): Flying Capacitor 2 Negative Terminal (C2).
GND (Pin 9): Ground. This pin should be connected
directly to a low impedance ground plane.
C1 – (Pin 10): Flying Capacitor 1 Negative Terminal (C1).
Exposed Pad (Pin 11): Ground. This pin must be sol-
dered to the PCB for electrical contact and rated thermal
performance.
regulation. An external resistor divider is required
between V OUT and FB to program the output voltage.
32031fa
6
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