参数资料
型号: LTC3788IUH#TRPBF
厂商: Linear Technology
文件页数: 2/32页
文件大小: 0K
描述: IC REG CTRLR BST PWM CM 32-QFN
标准包装: 2,500
PWM 型: 电流模式
输出数: 2
频率 - 最大: 850kHz
占空比: 100%
电源电压: 4.5 V ~ 38 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 32-WFQFN 裸露焊盘
包装: 带卷 (TR)
LTC3788
SENSE1 1
24 BOOST1
PLLIN/MODE 5
20 EXTV CC
ABSOLUTEMAXIMUMRATINGS
(Notes 1, 3)
VBIAS ........................................................ –0.3V to 40V
BOOST1, BOOST2 ...................................... –0.3V to 76V
SW1, SW2.................................................. –0.3V to 70V
RUN1, RUN2 ................................................ –0.3V to 8V
Maximum Current Sourced into Pin
from Source > 8V .............................................100μA
PGOOD1, PGOOD2, PLLIN/MODE ............... –0.3V to 6V
INTV CC , (BOOST1-SW1, BOOST2-SW2) ...... –0.3V to 6V
EXTV CC ........................................................ –0.3V to 6V
SENSE1 + , SENSE1 – ,
SENSE2 + , SENSE2 – .................................... –0.3V to 40V
SENSE1 + – SENSE1 – ,
SENSE2 + – SENSE2 – ................................. –0.3V to 0.3V
I LIM , SS1, SS2, ITH1, ITH2, FREQ,
PHASMD, VFB1, VFB2........................... –0.3V to INTV CC
Operating Junction Temperature Range ....–40°C to 125°C
Storage Temperature Range .................. –65°C to 125°C
ORDER INFORMATION
PIN CONFIGURATION
TOP VIEW
32 31 30 29 28 27 26 25
FREQ 2 23 BG1
PHASMD 3 22 VBIAS
CLKOUT 4 33 21 PGND
GND
SGND 6 19 INTV CC
RUN1 7 18 BG2
RUN2 8 17 BOOST2
9 10 11 12 13 14 15 16
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
T JMAX = 125°C, θ JA = 34°C/W
EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB
LEAD FREE FINISH
LTC3788EUH#PBF
LTC3788IUH#PBF
TAPE AND REEL
LTC3788EUH#TRPBF
LTC3788IUH#TRPBF
PART MARKING*
3788
3788
PACKAGE DESCRIPTION
32-Lead (5mm × 5mm) Plastic QFN
32-Lead (5mm × 5mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T A = 25°C, VBIAS = 12V, unless otherwise noted (Note 2).
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Main Control Loo p
VBIAS
Chip Bias Voltage Operating Range
4.5
38
V
V FB1,2
I FB1,2
V REFLNREG
Regulated Feedback Voltage
Feedback Current
Reference Line Voltage Regulation
I TH = 1.2V (Note 4)
(Note 4)
VBIAS = 6V to 38V
l
1.188
1.200
±5
0.002
1.212
±50
0.02
V
nA
%/V
3788fc
2
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