参数资料
型号: LTC3736EUF-1
厂商: Linear Technology
文件页数: 2/28页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 24-QFN
标准包装: 91
系列: PolyPhase®
PWM 型: 电流模式
输出数: 2
频率 - 最大: 825kHz
占空比: 100%
电源电压: 2.75 V ~ 9.8 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-WFQFN 裸露焊盘
包装: 管件
LTC3736-1
ABSOLUTE
AXI U
RATI GS
(Note 1)
InputSupplyVoltage(V IN ) ........................  –0.3Vto10V
FREQ, RUN/SS, SSDIS,
TRACK, SENSE1 + , SENSE2 + ,
IPRG1, IPRG2 Voltages ................. – 0.3V to (V IN + 0.3V)
V FB1 , V FB2 , I TH1 , I TH2 Voltages .................. – 0.3V to 2.4V
SW1, SW2 Voltages ............ –2V to V IN + 1V or 10V Max
PGOOD ..................................................... – 0.3V to 10V
PACKAGE/ORDER I FOR ATIO
TG1, TG2, BG1, BG2 Peak Output Current (<10 μ s) ..... 1A
Operating Temperature Range (Note 2) ... –40 ° C to 85 ° C
Storage Temperature Range .................. –65 ° C to 125 ° C
Junction Temperature (Note 3) ............................ 125 ° C
Lead Temperature (Soldering, 10 sec)
(LTC3736EGN-1) .................................................. 300 ° C
I TH1 1
IPRG2 2
FREQ 3
SGND 4
V IN 5
TOP VIEW
24 23 22 21 20 19
25
18 SSDIS
17 TG1
16 PGND
15 TG2
14 RUN/SS
ORDER PART
NUMBER
LTC3736EUF-1
SW1
IPRG1
V FB1
I TH1
IPRG2
FREQ
SGND
1
2
3
4
5
6
7
TOP VIEW
24 SENSE1 +
23 PGND
22 BG1
21 SSDIS
20 TG1
19 PGND
18 TG2
ORDER PART
NUMBER
LTC3736EGN-1
TRACK 6
7
8
9 10 11 12
13 BG2
UF PART MARKING
V IN
TRACK
8
9
17 RUN/SS
16 BG2
UF PACKAGE
3736-1
V FB2 10
I TH2 11
PGOOD 12
15 PGND
14 SENSE2 +
13 SW2
24-LEAD (4mm × 4mm) PLASTIC QFN
T JMAX = 125 ° C, θ JA = 37 ° C/W
EXPOSED PAD (PIN 25) IS PGND
MUST BE SOLDERED TO PCB
Consult LTC Marketing for parts specified with wider operating temperature ranges.
GN PACKAGE
24-LEAD PLASTIC SSOP
T JMAX = 125 ° C, θ JA = 130 ° C/ W
ELECTRICAL CHARACTERISTICS
The ● denotes specifications that apply over the full operating temperature
range, otherwise specifications are at T A = 25 ° C. V IN = 4.2V unless otherwise specified.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Main Control Loops
Input DC Supply Current
(Note 4)
Normal Mode
500
850
μ A
Shutdown
UVLO
RUN/SS = 0V
V IN < UVLO Threshold
9
3
20
10
μ A
μ A
Undervoltage Lockout Threshold
Shutdown Threshold at RUN/SS
Start-Up Current Source
Regulated Feedback Voltage
Output Voltage Line Regulation
V IN Falling
V IN Rising
RUN/SS = 0V
0 ° C to 85 ° C (Note 5)
–40 ° C to 85 ° C
2.75V < V IN < 9.8V (Note 5)
1.95
2.15
0.45
0.5
0.591
0.588
2.25
2.45
0.65
0.7
0.6
0.6
0.05
2.55
2.75
0.85
1
0.609
0.612
0.2
V
V
V
μ A
V
V
mV/V
37361f
2
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