参数资料
型号: LT1572CS#TR
厂商: Linear Technology
文件页数: 11/12页
文件大小: 0K
描述: IC REG MULTI CONFIG 1.25A 16SOIC
标准包装: 2,500
类型: 降压(降压),升压(升压),反相,Cuk,回扫,正向转换器,Sepic
输出数: 1
输入电压: 3 V ~ 30 V
PWM 型: 电流模式
频率 - 开关: 100kHz
电流 - 输出: 1.25A
同步整流器:
工作温度: 0°C ~ 100°C
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
供应商设备封装: 16-SOIC
LT1572
TYPICAL A PPLICATI
S
Negative Buck Converter
* REQUIRED IF INPUT LEADS ≥ 2"
** PULSE ENGINEERING 92114
COILTRONICS 50-2-52
CATHODE
V IN
V SW
L1**
50 μ H
C2
200 μ F
R1
4.64k
R4
LOAD
–5.2V
0.75A
C3*
100 μ F
E1
LT1572 ANODE
Q1
2N3906
12k
E2
GND
V C
FB
C1
V IN
–7V TO –20V
R3
R2
1.24k
1572 TA03
Backlight CCFL Supply (see AN55 for details)
INPUT VOLTAGE ?
4.5V TO 20V
L2***
1k
L1**
300 μ H
A
33pF
3kV
LAMP
Q1*
10 μ F
+
E2
CATHODE
V IN
V SW
0.02 μ F
D1
1N914
D2
1N914
50k
INTENSITY
TANT
LT1572 ANODE
Q2*
B
R3
10k
R1
560 ?
ADJUST
E1
GND
+
2 μ F
V C
FB
C6
1 μ F
* Q1,Q2 = BCP56 OR MPS650/561
** COILTRONICS CTX300-4
*** SUMIDA 6345-020 OR COILTRONICS 110092-1
? A MODIFICATION WILL ALLOW OPERATION DOWN TO 4.5V. CONSULT FACTORY.
1572 TA04
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
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