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參數(shù)資料
| 型號： | LTC3772BETS8#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 650 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 1 MM HEIGHT, LEAD FREE, PLASTIC, MO-193, TSOT-23, 8 PIN |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 318K |
| 代理商： | LTC3772BETS8#PBF |
3
LTC3772B
3772bfa
VFB Input Current
(Note 5)
–10
2
10
nA
Overvoltage Protect Threshold
Measured at VFB
0.850
0.880
0.910
V
Overvoltage Protect Hysteresis
40
mV
Oscillator Frequency
Normal Operation
VFB = 0.8V
500
550
650
kHz
Output Short Circuit
VFB = 0V
200
kHz
Gate Drive Rise Time
CLOAD = 3000pF
40
ns
Gate Drive Fall Time
CLOAD = 3000pF
40
ns
Peak Current Sense Voltage
IPRG = GND (Note 6)
●
55
70
85
mV
IPRG = Floating
●
120
138
155
mV
IPRG = VIN
●
190
208
225
mV
Default Soft-Start Time
Time for VFB to Ramp from 0.05V to 0.75V
0.8
ms
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
The
● indicates specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 4.2V unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3772BETS8/LTC3772BEDDB are guaranteed to meet
specifications from 0
°C to 70°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formula:
TJ = TA + (PD θJA°C/W)
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 5: The LTC3772B is tested in a feedback loop that servos VFB to the
output of the error amplifier while maintaining ITH/RUN at the midpoint of
the current limit range.
Note 6: Peak current sense voltage is reduced dependent on duty cycle as
given in Figure 1.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Quiescent Current (No Load)
vs Input Voltage
VIN (V)
2
195
QUIESCENT
CURRENT
(
A)
200
205
210
215
46
8
10
3772B G01
220
225
35
7
9
TEMPERATURE (
°C)
–60
QUIESCENT
CURRENT
(
A)
210
230
250
0
40
100
3772B G02
190
170
150
–40 –20
20
60
80
VIN = 5V
INPUT VOLTAGE (V)
2
QUIESCENT
CURRENT
(
A)
15
20
25
57
10
3772B G03
10
5
0
34
6
89
Quiescent Current (No Load)
vs Temperature
Quiescent Current (Shutdown)
vs Input Voltage
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3772EDDB#PBF | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Step Down 2.75V to 9.8V Input 8-Pin DFN EP |
| LTC3772EDDB#TRMPBF | 功能描述:IC REG CTRLR BUCK PWM CM 8-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LTC3772EDDB#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 8-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LTC3772ETS8 | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Step Down 2.75V to 9.8V Input 8-Pin TSOT-23 |
| LTC3772ETS8#PBF | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Step Down 2.75V to 9.8V Input 8-Pin TSOT-23 |
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