参数资料
型号: LTC3530EDD#PBF
厂商: Linear Technology
文件页数: 6/16页
文件大小: 0K
描述: IC REG BUCK BOOST SYNC ADJ 10DFN
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: 1
输出电压: 1.8 V ~ 5.25 V
输入电压: 1.8 V ~ 5.5 V
PWM 型: Burst Mode?
频率 - 开关: 300kHz ~ 2MHz
电流 - 输出: 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: 10-WFDFN 裸露焊盘
包装: 管件
供应商设备封装: 10-DFN(3x3)
产品目录页面: 1334 (CN2011-ZH PDF)
LTC3530
PIN FUNCTIONS
GND (Pin 5): Ground for the IC.
V OUT (Pin 6): Output of the Synchronous Recti?er. A ?lter
capacitor is placed from V OUT to GND. A ceramic bypass
FB (Pin 9): Feedback Pin. Connect resistor divider tap here.
The output voltage can be adjusted from 1.8V to 5.25V.
The feedback reference is typically 1.215V.
capacitor is recommended as close to the V OUT and GND
pins as possible.
V OUT = 1.215V ? 1 +
R1
R2
V IN (Pin 7): Input Supply Voltage. Internal V CC for the IC.
A 10μF ceramic capacitor is recommended as close to the
V IN and GND pins as possible.
SHDN/SS (Pin 8): Combined Soft-Start and Shutdown.
Applied voltage <0.4V shuts down the IC. Tie to >1.4V to
enable the IC and >1.6V to ensure the error amp is not
clamped from soft-start. An R-C from the shutdown com-
mand signal to this pin will provide a soft-start function
by limiting the rise time of V C .
V C (Pin10): Error Amp Output. An R-C network is con-
nected from this pin to FB for loop compensation. Refer
to “Closing the Feedback Loop” section for component
selection guidelines. During Burst Mode operation, V C is
internally clamped.
Exposed Pad (Pin 11, DD Package Only): Ground. This
pin must be soldered to the PCB and electrically connected
to ground.
BLOCK DIAGRAM
SW1
3
L1
ANTI-RING
4
SW2
7
V IN
SW A
SW D
V OUT
6
C IN
SW B
GATE
DRIVERS
AND
ANTICROSS
SW C
C OUT
CONDUCTION
REVERSE
AMP
R SS
+
G m = 1/60k
R1
C SS
8
SHDN/SS
SHUTDOWN
SOFT-START
SHUTDOWN
2A
+
ERROR
AMP
1.215V
FB
9
PWM
LOGIC
PWM
COMPARATORS
V C
10
C P1
R2
SLEEP
AUTOMATIC
BURST MODE
CONTROL
R T
R T
1
OSC
BURST
2
V REF
1.215V
V REF
R BURST
C BURST
THERMAL
GND
5
SHUTDOWN
3530 BD
3530fb
6
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LTC3530EMS-PBF 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide Input Voltage Synchronous Buck-Boost DC/DC Converter