参数资料
型号: LTC3534EGN#TRPBF
厂商: Linear Technology
文件页数: 16/20页
文件大小: 0K
描述: IC REG BUCK BST SYNC 0.5A 16SSOP
标准包装: 2,500
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 ~ 7 V
输入电压: 2.4 V ~ 7 V
PWM 型: Burst Mode?
频率 - 开关: 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: 16-SSOP(0.154",3.90mm 宽)
包装: 带卷 (TR)
供应商设备封装: 16-SSOP
LTC3534
TYPICAL APPLICATIONS
USB to 5V at 500mA
L1
5μH
USB to 5V Efficiency vs I LOAD
330pF R Z
USB
4.35V TO 5.25V
R SS C IN
200k 10μF
C SS
0.056μF
*BURST PWM
L1: COILCRAFT MSS7341
SW1 SW2
PV IN V OUT
V IN
LTC3534
RUN/SS FB
V C
PWM
PGND1 GND PGND2
R FF
10k
C Z1
33pF
C P1
15k
C P2
10pF
C OUT
22μF
3534 TA03a
V OUT
5V
500mA**
R1
649k
R2
162k
100
Burst
90 Mode
OPERATION
80
70
60
50
40
30
20
10
0.01 0.1 1 10
LOAD CURRENT (mA)
V IN = 4.35V
V IN = 4.8V
V IN = 5.25V
100 1000
3534 TA03b
*PWM MUST BE DRIVEN HIGH DURING START-UP. WHEN V OUT IS IN REGULATION,
THE PWM PIN MAY BE DRIVEN LOW TO COMMAND BURST MODE OPERATION.
**NOTE: OUTPUT CURRENT CAN BE LESS THAN 500mA
IF USB INPUT CURRENT LIMIT REACHED.
Li-Ion to 3.3V at 400mA
L1
3.3μH
Li-Ion to 3.3V Efficiency vs I LOAD
+
470pF R Z
V IN
2.7V TO 4.2V
1 Li-Ion
CELL
L1: TDK RLF7030
R SS
200k
C SS
0.056μF
*BURST PWM
C IN
10μF
SW1 SW2
PV IN V OUT
V IN
LTC3534
RUN/SS FB
V C
PWM
PGND1 GND PGND2
R FF
10k
C Z1
66pF
C P1
15k
C P2
10pF
C OUT
22μF
3534 TA04a
V OUT
3.3V
400mA
R1
374k
R2
162k
100
Burst
90 Mode
OPERATION
80
70
60
50
40
30
20
10
0.01 0.1 1 10
LOAD CURRENT (mA)
V IN = 2.7V
V IN = 3.6V
V IN = 4.2V
100 1000
3534 TA04b
*PWM MUST BE DRIVEN HIGH DURING START-UP. WHEN V OUT IS IN REGULATION,
THE PWM PIN MAY BE DRIVEN LOW TO COMMAND BURST MODE OPERATION.
3534fb
16
For more information www.linear.com/LTC3534
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