LTC1649 查看數據表（PDF） - Linear Technology
零件编号
产品描述 (功能)
生产厂家
LTC1649 Datasheet PDF : 16 Pages
| |||
BLOCK DIAGRA
VIN
SHDN
DELAY
50µs
INTERNAL
SHUTDOWN
C+
C–
CHARGE
PUMP
LTC1649
CPOUT
COMP
VCC
12µA
SS
ILIM
IMAX
12µA
PWM
FB
+–
1.26V
MIN
MAX
40mV
+
40mV
PVCC1
G1
PVCC2
G2
IFB
FB
1649 BD
TEST CIRCUIT
VIN
3.3V
MBR0530
22Ω
SHDN
+
10µF
C1
220pF
RC
7.5k
CC
0.01µF
RIMAX
50k
0.1µF
PVCC1
G1
PVCC2
IFB
VCC
G2
LTC1649
IMAX
FB
SHDN VIN
C+
COMP
SS
C–
GND CPOUT
1µF
1k
1µF
Q1, Q2 +
IRF7801
TWO IN
PARALLEL
CIN
3300µF
LEXT
1.2µH
Q3
IRF7801
R1
12.4k
VOUT
2.5V
+ COUT
4400µF
R2
12.7k
+
MBR0530
10µF
0.33µF
Figure 1
1649 TA03
5
Share Link: 