参数资料
型号: LTC3773EUHF#PBF
厂商: Linear Technology
文件页数: 2/32页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 38-QFN
标准包装: 52
系列: PolyPhase®
PWM 型: 电流模式
输出数: 3
频率 - 最大: 630kHz
占空比: 98.5%
电源电压: 3.3 V ~ 36 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: 38-WFQFN 裸露焊盘
包装: 管件
LTC3773
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Topside Driver Voltage (BOOSTn) .............. 42V to –0.3V
Switch Voltage (SWn) ................................... 36V to –1V
Boosted Driver Voltage (BOOSTn – SWn) .... 7V to –0.3V
Supply Voltages (V CC , V DR ).......................... 7V to –0.3V
PGOOD, PHASEMD, PLLFLTR, PLLIN/FC, SDBn,
TRACKn, V FB n ...............................(V CC + 0.3V) to –0.3V
SENSE + n, SENSE – n ........................ (1.1 ? V CC ) to –0.3V
I THn Voltage............................................... 2.7V to –0.3V
PIN CONFIGURATIONS
TOP VIEW
Extended Commercial Operating
Temperature Range (Note 2)................ –40°C to 85°C
Junction Temperature (Note 2) ............................. 125°C
Storage Temperature Range................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec)
G Package ......................................................... 300°C
Peak Body Temperature UHF Package................... 240°C
TOP VIEW
SENSE1 +
SENSE1 –
1
2
36 PHASEMD
35 PGOOD
SDB
3
34 BOOST1
38 37 36 35 34 33 32
TRACK1
4
33 TG1
TRACK1 1
31 BOOST1
16
SENSE3
V FB1 5
I TH1 6
SGND 7
I TH2 8
I TH3 9
V FB2 10
V FB3 11
TRACK2 12
TRACK3 13
SENSE2 – 14
SENSE2 + 15
SENSE3+ 17
V CC 18
32 SW1
31 SW2
30 TG2
29 BOOST2
28 BOOST3
27 TG3
26 SW3
25 BG1
24 BG2
23 V DR
22 PGND
21 BG3
20 PLLIN/FC
19 PLLFLTR
V FB1 2
I TH1 3
SGND 4
I TH2 5
I TH3 6
V FB2 7
V FB3 8
TRACK2 9
TRACK3 10
SENSE2 – 11
SENSE2 + 12
39
13 14 15 16 17 18 19
30 TG1
29 SW1
28 SW2
27 TG2
26 BOOST2
25 BOOST3
24 TG3
23 SW3
22 BG1
21 BG2
20 V DR
G PACKAGE
36-LEAD PLASTIC SSOP
T JMAX = 125°C, θ JA = 95°C/W
UHF PACKAGE
38-LEAD (5mm × 7mm) PLASTIC QFN
EXPOSED PAD IS PGND (PIN 39),
MUST BE SOLDERED TO PCB
T JMAX = 125°C, θ JA = 34°C/W
ORDERING INFORMATION
LEAD FREE FINISH
LTC3773EG#PBF
LTC3773EUHF#PBF
TAPE AND REEL
LTC3773EG#TRPBF
LTC3773EUHF#TRPBF
PART MARKING
3773E
PACKAGE DESCRIPTION
36-Lead Plastic SSOP
38-Lead (5mm x 7mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
Consult LTC Marketing for parts speci?ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based ?nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel speci?cations, go to: http://www.linear.com/tapeandreel/
3773fb
2
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