參數(shù)資料
型號(hào)： LTC3832EGN
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation
中文描述： SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, PLASTIC, SSOP-16
文件頁數(shù)： 1/24頁
文件大?。?/td> 316K
代理商： LTC3832EGN
1
LTC3832/LTC3832-1
High Power Step-Down
Synchronous DC/DC Controllers
for Low Voltage Operation
sn3832 3832fs
I
V
OUT
as Low as 0.6V
I
High Power Switching Regulator Controller
for 3.3V-5V to 0.6V-3.xV Step-Down Applications
I
No Current Sense Resistor Required
I
Low Input Supply Voltage Range: 3V to 8V
I
Maximum Duty Cycle >91% Over Temperature
I
All N-Channel External MOSFETs
I
Excellent Output Regulation:
±
1% Over Line, Load
and Temperature Variations
I
High Efficiency: Over 95% Possible
I
Adjustable or Fixed 2.5V Output (LTC3832)
I
Programmable Fixed Frequency Operation: 100kHz to
500kHz
I
External Clock Synchronization
I
Soft-Start
I
Low Shutdown Current: <10
μ
A
I
Overtemperature Protection
I
Available in SO-8 and SSOP-16 Packages
APPLICATIU
I
CPU Power Supplies
I
Multiple Logic Supply Generator
I
Distributed Power Applications
I
High Efficiency Power Conversion
The LTC
3832/LTC3832-1 are high power, high effi-
ciency switching regulator controllers optimized for
3.3V-5V to 0.6V-3.xV step-down applications. A preci-
sion internal reference and feedback system provide
±
1% output regulation over temperature, load current
and line voltage variations. The LTC3832/LTC3832-1 use
a synchronous switching architecture with N-channel
MOSFETs. Additionally, the chip senses output current
through the drain-source resistance of the upper
N-channel MOSFET, providing an adjustable current limit
without a current sense resistor.
The LTC3832/LTC3832-1 operate with an input supply
voltage as low as 3V and with a maximum duty cycle of
>91% over temperature. They include a fixed frequency
PWM oscillator for low output ripple operation. The 300kHz
free-running clock frequency can be externally adjusted or
synchronized with an external signal from 100kHz to 500kHz.
In shutdown mode, the LTC3832 supply current drops to
<10
μ
A. The LTC3832-1 is the SO-8 version without current
limit, frequency adjustment and shutdown functions.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Figure 1. High Efficiency 3.3V to 1V Power Converter
+
+
0.01
μ
F
15k
SS
COMP
GND
FB
V
CC
/PV
CC2
G1
PV
CC1
G2
LTC3832-1
680pF
0.1
μ
F
4.7
μ
F
MBR0520T1
Si9426DY
V
OUT
1V
9A
L1
3.2
μ
H
Si9426DY
L1: SUMIDA CDEP105-3R2MC-88
C
OUT
: PANASONIC EEFUEOD271R
C
OUT
270
μ
F
2V
3832 F01
0.1
μ
F
5.1
V
3V TO 7V
6.49k
4.32k
LOAD CURRENT (A)
40
E
60
80
100
50
70
90
2
4
6
8
3832 F01b
10
1
0
3
5
7
9
V
IN
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1V
Efficiency
DESCRIPTIOU
FEATURES
TYPICAL APPLICATIO
U
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC3832EGN#PBF 功能描述:IC REG CTRLR BUCK PWM VM 16-SSOP RoHS:是 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)
LTC3832EGN#TR 功能描述:IC REG CTRLR BUCK PWM VM 16-SSOP 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)
LTC3832EGN#TRPBF 功能描述:IC REG CTRLR BUCK PWM VM 16-SSOP RoHS:是 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)
LTC3832EG-T 制造商:LINEAR TECHNOLOGY CORPORA 功能描述: 制造商:LINTEC 功能描述:
LTC3833EFE#PBF 功能描述:IC REG CTRLR BUCK PWM CM 20TSSOP 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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