參數(shù)資料
型號： LTC1772
廠商： Linear Technology Corporation
英文描述： Constant Frequency Current Mode Step-Down DC/DC Controller in SOT-23
中文描述： 恒定頻率電流模式降壓DC / DC控制器，采用SOT - 23
文件頁數(shù)： 3/16頁
文件大?。?/td> 188K
代理商： LTC1772
3
LTC1772
TYPICAL PERFOR
M
A
N
CE CHARACTERISTICS
Reference Voltage
vs Temperature
Undervoltage Lockout Trip
Voltage vs Temperature
Shutdown Threshold
vs Temperature
Maximum (V
IN
– SENSE
–
) Voltage
vs Duty Cycle
Normalized Oscillator Frequency
vs Temperature
PI
FU
CTIO
N
S
U
U
I
TH
/RUN (Pin 1):
This pin performs two functions. It
serves as the error amplifier compensation point as well as
the run control input. The current comparator threshold
increases with this control voltage. Nominal voltage range
for this pin is 0.7V to 1.9V. Forcing this pin below 0.35V
causes the device to be shut down. In shutdown all
functions are disabled and the PGATE pin is held high.
GND (Pin 2):
Ground Pin.
V
FB
(Pin 3):
Receives the feedback voltage from an exter-
nal resistive divider across the output.
SENSE
–
(Pin 4):
The Negative Input to the Current Com-
parator.
V
IN
(Pin 5):
Supply Pin. Must be closely decoupled to GND
Pin 2.
PGATE (Pin 6):
Gate Drive for the External P-Channel
MOSFET. This pin swings from 0V to V
IN
.
TEMPERATURE (
°
C)
–55
775
V
F
780
790
795
800
825
810
–15
25
45
125
1772 G01
785
815
820
805
–35
5
65
85 105
V
IN
= 4.2V
TEMPERATURE (
°
C)
–55
–10
N
–8
–4
–2
0
10
4
–15
25
45
125
1772 G02
–6
6
8
2
–35
5
65
85 105
V
IN
= 4.2V
TEMPERATURE (
°
C)
–55
1.84
T
1.88
1.96
2.00
2.04
2.24
2.12
–15
25
45
125
1772 G03
1.92
2.16
2.20
2.08
–35
5
65
85 105
V
IN
= 4.2V
V
IN
FALLING
DUTY CYCLE (%)
20
30
T
100
1772 G04
40
50
60
70
80
90
130
120
110
100
90
80
70
60
50
V
IN
= 4.2V
T
A
= 25
°
C
TEMPERATURE (
°
C)
–55
200
I
T
/
240
320
360
400
600
480
–15
25
45
125
1772 G05
280
520
560
440
–35
5
65
85 105
V
IN
= 4.2V
相關(guān)PDF資料
PDF描述
LTC1773 Synchronous Step-Down Regulator Controller(同步步降穩(wěn)壓器)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1772BES6 制造商:Linear Technology 功能描述:IC CTRLR DC/DC S-DWN SOT23-6
LTC1772BES6#PBF 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Step Down 2.5V to 9.8V Input 6-Pin TSOT-23 制造商:Linear Technology 功能描述:DC-DC CONTROLLER BUCK 5A TS 制造商:Linear Technology 功能描述:DC-DC CONTROLLER, BUCK, 5A, TSOT-23-6; Primary Input Voltage:9.8V; No. of Outputs:1; Output Current:5A; No. of Pins:6; Operating Temperature Min:-40C; Operating Temperature Max:85C; Package / Case:6-TSOT-23; Supply Voltage Max:9.8V;RoHS Compliant: Yes 制造商:Linear Technology 功能描述:DC-DC CONTROLLER, BUCK, 5A, TSOT-23-6; Primary Input Voltage:9.8V; No. of Outputs:1; Output Current:5A; No. of Pins:6; Operating Temperature Min:-40C; Operating Temperature Max:85C; Package / Case:6-TSOT-23 ;RoHS Compliant: Yes
LTC1772BES6#TR 功能描述:IC REG CTRLR BUCK PWM CM SOT23-6 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)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)
LTC1772BES6#TRM 功能描述:IC REG CTRLR BUCK PWM CM SOT23-6 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)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)
LTC1772BES6#TRMPBF 功能描述:IC REG CTRLR BUCK PWM CM SOT23-6 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR
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