参数资料
型号: LTC3829IUHF#TRPBF
厂商: Linear Technology
文件页数: 2/40页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 38-QFN
标准包装: 2,500
系列: PolyPhase®
PWM 型: 电流模式
输出数: 1
频率 - 最大: 850kHz
占空比: 94%
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: 38-WFQFN 裸露焊盘
包装: 带卷 (TR)
LTC3829
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (V IN ) ......................... 40V to –0.3V
Topside Driver Voltages (BOOSTn) ............ 46V to –0.3V
Switch Voltage (SWn) ................................... 40V to –5V
Boosted Driver Voltage (BOOSTn – SWn) .... 6V to –0.3V
INTV CC , PGOOD, RUN, EXTV CC .................... 6V to –0.3V
ITEMP, IFAST, V FB Pin Voltages.............. INTV CC to –0.3V
TK/SS, FREQ, DIFFP, DIFFN, DIFFOUT, ISET
AVP, I LIM , MODE, PLLIN Voltages .......... INTV CC to –0.3V
I TH Voltage ............................................ INTV CC to –0.3V
SENSE + n, SENSE – n................................... 5.7V to –0.3V
Operating Junction Temperature Range
(Notes 2, 3) ............................................ –45°C to 125°C
Storage Temperature Range................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec) (FE) ........... 300°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
38 37 36 35 34 33 32
ITEMP
DIFFOUT
DIFFN
DIFFP
1
2
3
4
38 IFAST
27 MODE
36 CLKOUT
35 BOOST1
DIFFN 1
DIFFP 2
RUN 3
31 SW1
30 BG1
29 BG2
RUN
AVP
SENSE1 +
5
6
7
34 TG1
33 SW1
32 BG1
AVP 4
SENSE1 + 5
SENSE1 – 6
SENSE2 + 7
SENSE2 – 8
TK/SS 9
FREQ 10
SENSE3 + 11
SENSE3 – 12
39
13 14 15 16 17 18 19
28 SW2
27 TG2
26 BOOST2
25 V IN
24 INTV CC
23 EXTV CC
22 BG3
21 SW3
20 TG3
SENSE1 – 8
SENSE2 + 9
SENSE2 – 10
TK/SS 11
FREQ 12
SENSE3 + 13
SENSE3 – 14
V FB 15
I TH 16
ISET 17
39
31 BG2
30 SW2
29 TG2
28 BOOST2
27 V IN
26 INTV CC
25 EXTV CC
24 BG3
23 SW3
22 TG3
I LIM 18
21 BOOST3
UHF PACKAGE
38-LEAD (5mm × 7mm) PLASTIC QFN
T JMAX = 125°C, θ JA = 34°C/W
EXPOSED PAD (PIN 39) IS SGND/PGND, MUST BE SOLDERED TO PCB
PGOOD 19 20 PLLIN
FE PACKAGE
38-LEAD PLASTIC TSSOP
T JMAX = 125°C, θ JA = 25°C/W
EXPOSED PAD (PIN 39) IS SGND/PGND, MUST BE SOLDERED TO PCB
3829fa
2
For more information www.linear.com/LTC3829
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