参数资料
型号: LTC3523EUD-2#PBF
厂商: Linear Technology
文件页数: 7/16页
文件大小: 0K
描述: IC REG BUCK BOOST SYNC ADJ 16QFN
标准包装: 121
类型: 降压(降压),升压(升压)
输出类型: 可调式
输出数: 2
输出电压: 0.62 V ~ 5.5 V
输入电压: 1.8 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 2.4MHz
电流 - 输出: 400mA,600mA
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: 16-WFQFN 裸露焊盘
包装: 管件
供应商设备封装: 16-QFN-EP(3x3)
LTC3523/LTC3523-2
BLOCK DIAGRAM
L1
V IN
1.8V TO 5.5V
+
4.7μH
C IN
16
2
5
47μF
SHDN1
V IN1
SW1
BULK CONTROL
SIGNALS
SHUTDOWN
AND
V BIAS
SHDN
MODE
ANTI-RING
PWM
LOGIC
V OUT
4
V OUT
STEP-UP
1.8V TO 5.25V
OSC
AND
DRIVERS
CURRENT
SENSE
+ –
I ZERO
COMP
PWM/I LIM
COMP
MODE
MODE
+
FB1
1
R1
C OUT
10μF
I LIM
REF
+
+
C C1
R Z
C C2
g m ERROR
AMPLIFIER
START-UP
1.2V
R2
SLOPE COMPENSATION
SOFT-START
3
PGOOD1
FB1
SLP
AND
THERM REG
+
1.2V
–9%
STEP-UP
15
V BAT
OSCILLATOR
OSC
SLP
REFERENCE
0.6V
1.2V
1V
MODE 10
THERMAL SHDN
SHARED
9
V IN2
STEP-DOWN
SLOPE COMPENSATION
+
+
ZERO CURRENT
COMP
+
SLP
PWM/I LIM
0A
11
PGOOD2
+
I LIM
REF
FB2
0.6V
–9%
COMP
+
OSC
MODE
PWM
LOGIC
AND
DRIVERS
V OUT
LIMIT
COMP
SW2
GND2
8
L2
4.7μH
V OUT
STEP-DOWN
0.615V TO 5.5V
0.66V
+
13
SHDN2
SHUTDOWN
AND
V BIAS
SHDN
MODE MODE
g m ERROR
0.6V
FB2
12
R3
R4
C OUT
10μF
C C1
R Z
AMPLIFIER
START-UP
SOFT-START
AND
THERM REG
GND1
GND2
GND3
6
7
14
3523 BD
3523fb
7
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