参数资料
型号: LTC1772ES6#TRM
厂商: Linear Technology
文件页数: 2/12页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM SOT23-6
标准包装: 1
PWM 型: 电流模式
输出数: 1
频率 - 最大: 650kHz
占空比: 100%
电源电压: 2.5 V ~ 9.8 V
降压: 是
升压: 无
回扫: 无
反相: 无
倍增器: 无
除法器: 无
Cuk: 无
隔离: 无
工作温度: -40°C ~ 85°C
封装/外壳: SOT-23-6 细型,TSOT-23-6
包装: 剪切带 (CT)
其它名称: LTC1772ES6
LTC1772ES6#TRMCT
LTC1772ES6-ND
LTC1772
LTC1772ES6
I TH /RUN 1 LTC1772IS6
5 V IN LTC1772HS6
LTIM
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage (V IN )......................... – 0.3V to 10V
SENSE – , PGATE Voltages ............. – 0.3V to (V IN + 0.3V)
V FB , I TH /RUN Voltages ............................. – 0.3V to 2.4V
PGATE Peak Output Current (<10 μ s) ......................... 1A
Storage Ambient Temperature Range ... – 65 ° C to 150 ° C
Operating Temperature Range
LTC1772CS6 ........................................... 0 ° C to 70 ° C
LTC1772ES6 (Note 2) ........................ – 40 ° C to 85 ° C
LTC1772IS6 (Note 2) ......................... – 40 ° C to 85 ° C
LTC1772HS6 (Notes 2,3) ................. – 40 ° C to 140 ° C
Junction Temperature (Note 3) ............................. 150 ° C
Lead Temperature (Soldering, 10 sec).................. 300 ° C
PACKAGE/ORDER I N FOR M ATIO N
ORDER PART NUMBER
LTC1772CS6
TOP VIEW
6 PGATE
GND 2
V FB 3 4 SENSE –
S6 PART MARKING
S6 PACKAGE
6-LEAD PLASTIC SOT-23 LTIL
θ JA = 230 ° C/ W
LTB7
LTBRY
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 specifications that apply over the full operating temperature
range, otherwise specifications are at T A = 25 ° C. V IN = 4.2V unless otherwise specified. (Note 2)
PARAMETER
Input DC Supply Current
Normal Operation
Sleep Mode
Shutdown
UVLO
CONDITIONS
Typicals at V IN = 4.2V (Note 4)
2.4V ≤ V IN ≤ 9.8V
2.4V ≤ V IN ≤ 9.8V
2.4V ≤ V IN ≤ 9.8V, V ITH /RUN = 0V
V IN < UVLO Threshold
MIN
TYP
270
230
8
6
MAX
420
370
22
10
UNITS
μ A
μ A
μ A
μ A
Undervoltage Lockout Threshold
Shutdown Threshold (at I TH /RUN)
Start-Up Current Source
Regulated Feedback Voltage
V IN Falling (LTC1772C)
V IN Falling (LTC1772E, LTC1772I, LTC1772H)
V IN Rising
(LTC1772C)
(LTC1772E, LTC1772I, LTC1772H)
V ITH /RUN = 0V
(Note 5) (LTC1772C)
(Note 5) (LTC1772E, LTC1772I, LTC1772H)
●
●
●
●
●
●
1.60
1.55
1.85
0.20
0.15
0.25
0.780
0.770
2.00
2.00
2.10
0.35
0.35
0.5
0.800
0.800
2.30
2.35
2.40
0.50
0.55
0.85
0.820
0.830
V
V
V
V
V
μ A
V
V
Output Voltage Line Regulation
Output Voltage Load Regulation
2.4V ≤ V IN ≤ 9.8V (Note 5)
I TH /RUN Sinking 5 μ A (Note 5)
I TH /RUN Sourcing 5 μ A (Note 5)
0.05
2.5
2.5
mV/V
mV/ μ A
mV/ μ A
V FB Input Current
(Note 5)
10
50
nA
Overvoltage Protect Threshold
Measured at V FB
0.820
0.860
0.895
V
Overvoltage Protect Hysteresis
20
mV
Oscillator Frequency
V FB = 0.8V
500
550
650
kHz
V FB = 0V
120
kHz
Gate Drive Rise Time
Gate Drive Fall Time
Peak Current Sense Voltage
C LOAD = 3000pF
C LOAD = 3000pF
(Note 6)
40
40
120
ns
ns
mV
1772fb
2
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