参数资料
型号: LTC3727EG-1
厂商: Linear Technology
文件页数: 2/32页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 28-SSOP
标准包装: 47
系列: PolyPhase®
PWM 型: 电流模式
输出数: 2
频率 - 最大: 580kHz
占空比: 99%
电源电压: 4 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: 28-SSOP(0.209",5.30mm 宽)
包装: 管件
LTC3727/LTC3727-1
ABSOLUTE
AXI U
RATI GS (Note 1)
Input Supply Voltage (V IN ).........................36V to – 0.3V
Top Side Driver Voltages
(BOOST1, BOOST2) ...................................42V to – 0.3V
Switch Voltage (SW1, SW2) .........................36V to – 5V
INTV CC, EXTV CC , (BOOST1-SW1),
(BOOST2-SW2) ........................................8.5V to – 0.3V
RUN/SS1, RUN/SS2, PGOOD ..................... 7V to – 0.3V
SENSE1 + , SENSE2 + , SENSE1 – ,
SENSE2 – Voltages .....................................14V to – 0.3V
PLLIN, PLLFLTR, FCB Voltages ........... INTV CC to – 0.3V
PACKAGE/ORDER I FOR ATIO
I TH1, I TH2 , V OSENSE1 , V OSENSE2 Voltages ...2.7V to – 0.3V
Peak Output Current <10 μ s (TG1, TG2, BG1, BG2) ... 3A
INTV CC Peak Output Current ................................ 50mA
Operating Temperature Range (Note 2) .. – 40 ° C to 85 ° C
Junction Temperature (Note 3) ............................. 125 ° C
Storage Temperature Range ................. – 65 ° C to 125 ° C
Lead Temperature
(Soldering, 10 sec, G Package)............................. 300 ° C
Solder Reflow Temperature (UH Package) ........... 265 ° C
TOP VIEW
ORDER PART
TOP VIEW
ORDER PART
RUN/SS1
1
28 PGOOD
NUMBER
NUMBER
SENSE1 +
SENSE1 –
V OSENSE1
PLLFLTR
PLLIN
FCB
2
3
4
5
6
7
27 TG1
26 SW1
25 BOOST1
24 V IN
23 BG1
22 EXTV CC
LTC3727EG
LTC3727EG-1
LTC3727IG-1
V OSENSE1 1
PLLFLTR 2
PLLIN 3
FCB 4
I TH1 5
32 31 30 29 28 27 26 25
33
24 BOOST1
23 V IN
22 BG1
21 EXTV CC
20 INTV CC
LTC3727EUH-1
I TH1
8
21 INTV CC
SGND 6
19 PGND
SGND
9
20 PGND
3.3V OUT 7
18 BG2
UH PART
3.3V OUT 10
19 BG2
I TH2 8
17 BOOST2
MARKING
I TH2 11
V OSENSE2 12
SENSE2 – 13
18 BOOST2
17 SW2
16 TG2
9 10 11 12 13 14 15 16
37271
SENSE2 + 14 15 RUN/SS2
G PACKAGE
28-LEAD PLASTIC SSOP
T JMAX = 125 ° C, θ JA = 95 ° C/W
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
T JMAX = 125 ° C, θ JA = 34 ° C/W
EXPOSED PAD (PIN 33) IS SGND
(MUST BE SOLDERED TO PCB)
Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V IN = 15V, V RUN/SS1, 2 = 5V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Main Control Loops
V OSENSE1, 2
I VOSENSE1, 2
V REFLNREG
Regulated Feedback Voltage
Feedback Current
Reference Voltage Line Regulation
(Note 4); I TH1, 2 Voltage = 1.2V
(Note 4)
V IN = 3.6V to 30V (Note 4)
0.792
0.800
–5
0.002
0.808
– 50
0.02
V
nA
%/V
3727fc
2
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