参数资料
型号: LTC1702IGN#TRPBF
厂商: Linear Technology
文件页数: 2/36页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 24-SSOP
标准包装: 2,500
系列: PolyPhase®
PWM 型: 电压模式
输出数: 2
频率 - 最大: 750kHz
占空比: 93%
电源电压: 3 V ~ 7 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: 24-SSOP(0.154",3.90mm 宽)
包装: 带卷 (TR)
LTC1702
ABSOLUTE M AXI M U M RATINGS
(Note 1)
PACKAGE/ORDER I N FOR M ATIO N
TOP VIEW
Supply Voltage
V CC ........................................................................ 7V
BOOSTn............................................................... 15V
BOOSTn – SWn .................................................... 7V
Input Voltage
SWn .......................................................... – 1V to 8V
All Other Inputs ......................... – 0.3V to V CC + 0.3V
Peak Output Current < 10 μ s
PV CC
BOOST1
BG1
TG1
SW1
I MAX1
PGOOD1
FCB
RUN/SS1
1
2
3
4
5
6
7
8
9
24 I MAX2
23 BOOST2
22 BG2
21 TG2
20 SW2
19 PGND
18 PGOOD2
17 FAULT
16 RUN/SS2
TGn, BGn ............................................................... 5A
COMP1 10
15 COMP2
Operating Temperature Range
LTC1702C ............................................... 0 ° C to 70 ° C
LTC1702I ........................................... – 40 ° C to 85 ° C
Storage Temperature Range ................. – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec).................. 300 ° C
SGND 11 14 FB2
FB1 12 13 V CC
GN PACKAGE
24-LEAD NARROW PLASTIC SSOP
T JMAX = 125 ° C, θ JA = 100 ° C/ W
ORDER PART NUMBER
LTC1702CGN
LTC1702IGN
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/
ConsultLTCMarketingforpartsspecifiedwithwideroperatingtemperatureranges.
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are TA = 25 ° C. V CC = 5V unless otherwise specified. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Main Control Loop
V CC
V CC Supply Voltage
3
7
V
PV CC
BV CC
I CC
IPV CC
I BOOST
PV CC Supply Voltage
BOOST Pin Voltage
V CC Supply Current
PV CC Supply Current
BOOST Pin Current
(Note 2)
V BOOST – V SW (Note 2)
Test Circuit 1, C L = 0pF
RUN/SS1 = RUN/SS2 = 0V (Note 5)
Test Circuit 1, C L = 0pF (Note 4)
RUN/SS1 = RUN/SS2 = 0V (Note 5)
Test Circuit 1, C L = 0pF (Note 4)
RUN/SS1 = RUN/SS2 = 0V
3
2.7
2.2
30
2.2
6
1.3
0.1
7
7
8
100
6
100
3
10
V
V
mA
μ A
mA
μ A
mA
μ A
V FB
? V FB
I FB
? V OUT
V FCB
Feedback Voltage
Feedback Voltage Line Regulation
Feedback Current
Output Voltage Load Regulation
FCB Threshold
Test Circuit 1, C L = 0pF, LTC1702C
Test Circuit 1, C L = 0pF, LTC1702I
V CC = 3V to 7V
(Note 6)
0.792
0.790
0.75
0.800
0.800
± 0.005
± 0.001
0.1
0.8
0.808
0.810
± 0.05
± 1
± 0.2
0.85
V
V
%/V
μ A
%
V
? V FCB
FCB Feedback Hysteresis
20
mV
I FCB
FCB Pin Current
± 0.001
± 1
μ A
V RUN
I SS
RUN/SS Pin RUN Threshold
Soft-Start Source Current
RUN/SSn = 0V
0.45
–2
0.55
– 3.5
0.65
–6
V
μ A
1702fa
2
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