参数资料
型号: LT1610IS8#PBF
厂商: Linear Technology
文件页数: 5/16页
文件大小: 0K
描述: IC REG BOOST ADJ 0.6A 8SOIC
标准包装: 100
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 1.23 V ~ 30 V
输入电压: 0.9 V ~ 8 V
PWM 型: 电流模式,混合
频率 - 开关: 1.7MHz
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: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
供应商设备封装: 8-SOIC
产品目录页面: 1328 (CN2011-ZH PDF)
LT1610
PI N FU N CTIO N S
V C (Pin 1): Error Amplifier Output. Frequency compensa-
tion network must be connected to this pin, either internal
(COMP pin) or external series RC to ground. 220k ? /
220pF typical value.
FB (Pin 2): Feedback Pin. Reference voltage is 1.23V.
Connect resistive divider tap here. Minimize trace area at
FB. Set V OUT according to V OUT = 1.23V (1 + R1/R2).
SHDN (Pin 3): Shutdown. Ground this pin to turn off
device. Tie to 1V or more to enable.
PGND (Pin 4): Power Ground. Tie directly to local ground
plane.
BLOCK DIAGRA
V IN
SW (Pin 5): Switch Pin. Connect inductor/diode here.
Minimize trace area at this pin to keep EMI down.
V IN (Pin 6): Input Supply Pin. Must be locally bypassed.
GND (Pin 7): Signal Ground. Carries all device ground
current except switch current. Tie to local ground plane.
COMP (Pin 8): Internal Compensation Network. Tie to V C
pin, or let float if external compensation is used. Output
capacitor must be tantalum if COMP pin is used for com-
pensation.
6
R5
R6
V IN
V OUT
40k
40k
+
R1
(EXTERNAL)
FB
FB 2
Q1
Q2
× 10
A1
g m
1 V C
8 COMP
R C
SHUTDOWN
3 SHDN
7 GND
R2
(EXTERNAL)
R3
30k
R4
140k
BIAS
C C
+
ENABLE
5 SW
COMPARATOR
RAMP
GENERATOR
Σ
A2
R
FF
S
Q
DRIVER
+
Q3
1.7MHz
OSCILLATOR
A=3
0.15 ?
4
PGND
1610 F02
Figure 2. LT1610 Block Diagram
5
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