参数资料
型号: LTC3802EGN#TR
厂商: Linear Technology
文件页数: 28/28页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 28-SSOP
标准包装: 2,500
系列: PolyPhase®
PWM 型: 电压模式
输出数: 2
频率 - 最大: 850kHz
占空比: 92%
电源电压: 3 V ~ 30 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 28-SSOP(0.154",3.90mm 宽)
包装: 带卷 (TR)
LTC3802
TYPICAL APPLICATIO
2.5V/15A and 1.8V/15A Outputs with Start-Up Tracking and External Synchronization
V IN
8V TO 28V
+
C IN
22 μ F
35V
× 4
1.5 μ F
35V
× 8
2k
100 ?
5.6V
MM5Z6V2ST1
Q1
ZETEX
FZT603
+
10 μ F
V CC
D3
+
R B1
1500pF
3.16k
× 2
330pF
I MAX1 I MAX2
C SS
0.1 μ F
R IMAX2
+
R22
330pF C12
V OUT1
2.5V
15A
GND
560pF
R11 R T4 R41
10k 10k 10k
C31
3.16k
R T5 R51
4.99k
C OUT1 , C OUT2 : SANYO 4TPD330M
L1, L2: TOKO FDA1254-1R0M
L1
1 μ H
D1
B340B
C OUT1
330 μ F
4V × 3
R31
390 ?
R21
15k
QT1
Si7884DP
0.1 μ F
QB1
Si7884DP
R IMAX1
62k
C21
C11
2200pF
BURST
CONTINUOUS
1
4
3
5
2
6
7
8
9
10
11
12
13
14
26
PV CC TG2
27
TG1 BOOST2
25
BOOST1 SW2
28
SW1 BG2
24
BG1 PLLIN
23
PGND PLLLPF
LTC3802
22
21
FBT CMPIN2
20
CMPIN1 V CC
19
COMP1 COMP2
18
FB1 FB2
17
SGND PHASEMD
16
FCB V INFF
15
RUN/SS PGOOD
10k
0.1 μ F V CC
V IN
C INFF
0.47 μ F
BAS40-06LT1
0.1 μ F
10k
2k
10k
0 DEG
0.1 μ F 10 μ F
C22
QT2
Si7884DP L2
1 μ H
QB2
Si7884DP
× 2 C OUT2
EXT 330 μ F
SYNC 4V × 3
D2
62k B340B
10 ?
V CC
15k
2200pF
+
R52
4.99k
R42
10k
560pF
R B2
4.99k
R12
10k
C32
1500pF
R32
390 ?
3802 TA02
V OUT2
1.8V
15A
GND
RELATED PARTS
PART NUMBER
LTC1530
DESCRIPTION
High Power Synchronous Step-Down Controller
COMMENTS
SO-8 with Current Limit. No R SENSE TM Required
LTC1628/LTC1628-PG 2-Phase, Dual Output Synchronous Step-Down DC/DC
LTC1628-SYNC Controllers
Constant Frequency, Standby 5V and 3.3V LDOs, Power Good
LTC1702A
LTC1704
LTC1735
LTC1778
LTC3703
LTC3708
LTC3728
LTC3832
Dual PolyPhase ? Synchronous Step-Down Switching
Regulator
550kHz Synchronous Switching Regulator Controller
Plus Linear Regulator Controller
Synchronous Step-Down DC/DC Controller
No R SENSE Current Mode Synchronous Step-Down
Controller
High Input Synchronous Step-Down Controller
Dual, 2-Phase, No R SENSE Synchronous Step-Down DC/DC
Controller
550kHz, 2-Phase Dual Output Synchronous Step-Down
Controller
High Power Step-Down Synchronous DC/DC Controller
for Low Voltage Operation
550kHz Operation, No R SENSE , 3V ≤ V IN ≤ 7V, Voltage Mode
550kHz, 25MHz GBW, Voltage Mode Switching Regulator
Plus 2A Linear Regulator Controller
3.5V ≤ V IN ≤ 36V, 0.8V ≤ V OUT ≤ 6V, Current Mode
Up to 97% Efficiency, 4V ≤ V IN ≤ 36V, 0.8V ≤ V OUT ≤ (0.9)(V IN ),
I OUT Up to 20A
V IN ≤ 100V, 100kHz to 600kHz Operation
2-Phase, No R SENSE Controller with Output Tracking
Synchronizable, Current Mode, 3.5V ≤ V IN ≤ 36V,
SSOP and QFN Packages
Constant Frequency, Voltage Mode with Current Limit
3V ≤ V IN ≤ 8V, 0.6V ≤ V OUT ≤ (0.9)(V IN )
PolyPhase is a registered trademark of Linear Technology Corporation. No R SENSE is a trademark of Linear Technology Corporation.
3802f
(408) 432-1900 q FAX: (408) 434-0507 www.linear.com
28
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
q
LT/TP 0404 1K ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2004
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