参数资料
型号: LTC3615EUF#PBF
厂商: Linear Technology
文件页数: 32/32页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 3A DL 24QFN
标准包装: 91
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 0.6 V ~ 5.5 V
输入电压: 2.25 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 400kHz ~ 4MHz
电流 - 输出: 3A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-WFQFN 裸露焊盘
包装: 管件
供应商设备封装: 24-QFN 裸露焊盘(4x4)
LTC3615/LTC3615-1
TYPICAL APPLICATION
PV IN1 PV IN2
(2 × )
V SW2
200ns/DIV
V IN
3.3V
47μF
20pF
R C
7.5k
C C
2000pF
1μF
R9
174k
R8
226k
SV IN (2 × ) (2 × )
RUN1
TRACK/SS1
PGOOD1
ITH1 FB1
LTC3615
R T /SYNC
SRLIM (2 × ) SW2
PHASE
RUN2
TRACK/SS2
PGOOD2
ITH2 SGND PGND
SW1
MODE FB2
L1
0.47μH
L2
0.47μH
R1
102k
R2
102k
V OUT
1.2V/6A
47μF
V SW1
2V/DIV,
1A/DIV
I L1
I L2
I L1 + I L2
3615 F16
MODE = FCM
Figure 16. Reduced Ripple Current
(Waveform I L1 + I L2 ) and Ripple Voltage
(Not Shown) Through 180° Phase Shift
Between SW1 and SW2
3615 F15
Figure 15. Single, Low Ripple 6A Output
100
V OUT = 1.2V
90 MODE = FCM
80
70
60
50
40
30
20
10
0
0.01
0.1
1
V IN = 2.5V
V IN = 3.3V
V IN = 5V
10
OUTPUT CURRENT (A)
3615 F17
Figure 17. Efficiency vs Load Current
for V OUT = 1.2V and I OUT Up to 6A
RELATED PARTS
PART NUMBER
DESCRIPTION
15V, Dual 3A, 4MHz, Synchronous Step-Down DC/DC
Converter
COMMENTS
95% Efficiency, V IN : 3.60V to 15V, V OUT(MIN) = 0.6V, I Q = 500μA, I SD < 13μA,
4mm × 5mm QFN-28 and TSSOP-28E Packages
5.5V, Dual 3A/1A, 4MHz, Synchronous Step-Down DC/ 95% Efficiency, V IN : 2.25V to 5.5V, V OUT(MIN) = 0.6V, I Q = 160μA, I SD < 1μA,
DC Converter 4mm × 5mm QFN-28 Package
5.5V, Dual 1.5A/1A, 4MHz, Synchronous Step-Down
DC/DC Converter
5.5V, 3A, 4MHz, Synchronous Step-Down DC/DC
Converter
5.5V, 4A, 4MHz, Synchronous Step-Down DC/DC
Converter
5.5V, 6A, 4MHz, Synchronous Step-Down DC/DC
Converter
95% Efficiency, V IN : 2.25V to 5.5V, V OUT(MIN) = 0.8V, I Q = 125μA, I SD < 1μA,
TSSOP-16E and 3mm × 5mm DFN-16 Packages
95% Efficiency, V IN : 2.25V to 5.5V, V OUT(MIN) = 0.6V, I Q = 75μA, I SD < 1μA,
3mm × 4mm QFN-20 and TSSOP-20E Packages
95% Efficiency, V IN : 2.25V to 5.5V, V OUT(MIN) = 0.6V, I Q = 75μA, I SD < 1μA,
3mm × 4mm QFN-20 and TSSOP-20E Packages
95% Efficiency, V IN : 2.25V to 5.5V, V OUT(MIN) = 0.6V, I Q = 75μA, I SD < 1μA,
3mm × 5mm QFN-24 Package
1630 McCarthy Blvd., Milpitas, CA 95035-7417 Formore(408)432-1900 ● FAX:(408)434-0507 Corporation information
32 Linear Technology ● www.linear.com/LTC3615 www.linear.com/LTC3615
3615fb
LT 0613 REV B ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2010
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