參數(shù)資料
型號(hào)： LTC3830
廠商： Linear Technology Corporation
英文描述： 16-Bit Bus Transceiver With 3-State Outputs 48-SSOP -40 to 85
中文描述： 高功率降壓型同步DC / DC控制器的低電壓工作
文件頁(yè)數(shù)： 1/24頁(yè)
文件大?。?/td> 305K
代理商： LTC3830
1
LTC3830/LTC3830-1
High Power Step-Down
Synchronous DC/DC Controllers
for Low Voltage Operation
DESCRIPTIOU
sn3830 3830fs
I
High Power Switching Regulator Controller
for 3.3V-5V to 1.xV-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 3.3V Output (16-Pin Version)
I
Programmable Fixed Frequency Operation: 100kHz to
500kHz
I
External Clock Synchronization
I
Soft-Start (Some Versions)
I
Low Shutdown Current: <10
μ
A
I
Overtemperature Protection
I
Available in S8, S16 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
3830/LTC3830-1 are high power, high effi-
ciency switching regulator controllers optimized for
3.3V-5V to 1.xV-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 LTC3830/LTC3830-1 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 FET, providing an adjustable current limit
without a current sense resistor.
The LTC3830/LTC3830-1 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 200kHz
free-running clock frequency can be externally adjusted or
synchronized with an external signal from 100kHz to 500kHz.
In shutdown mode, the LTC3830 supply current drops to
<10
μ
A. The LTC3830-1 differs from the LTC3830 S8 ver-
sion by replacing shutdown with a soft-start function.
For a similar, pin compatible DC/DC converter with an
output voltage as low as 0.6V, please refer to the LTC3832.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Figure 1. High Efficiency 3V-8V to 1.8V Power Converter
+
+
0.01
μ
F
15k
SS
COMP
GND
FB
PV
CC2
G1
PV
CC1
G2
LTC3830-1
12V
3.3nF
0.1
μ
F
4.7
μ
F
M1
Si7806DN
4.7
μ
F
B320A
220
μ
F
10V
1.8V
9A
L
3.2
μ
H
M2
Si7806DN
L: SUMIDA CDEP105-3R2MC-88
C
OUT
: PANASONIC EEFUEOD271R
C
OUT
270
μ
F
2V
3830 F01
5.1
V
3V TO 8V
12.7k 1%
5.36k 1%
LOAD CURRENT (A)
40
E
60
80
100
50
70
90
2
4
6
8
3830 TA02
10
1
0
3
5
7
9
V
IN
= 3.3V
V
OUT
= 1.8V
Efficiency
FEATURES
TYPICAL APPLICATIO
U
相關(guān)PDF資料
PDF描述
LTC3830-1 16-Bit Bus Transceiver With 3-State Outputs 54-BGA MICROSTAR JUNIOR -40 to 85
LTC3830-1ES8 16-Bit Bus Transceiver With 3-State Outputs 56-BGA MICROSTAR JUNIOR -40 to 85
LTC3830ES 16-Bit Bus Transceiver With 3-State Outputs 54-BGA MICROSTAR JUNIOR -40 to 85
LTC3830ES8 16-Bit Bus Transceiver With 3-State Outputs 48-TSSOP -40 to 85
LTC4002 Standalone Linear Li-lon Battery Charger with Thermistor Input
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC3830-1ES8 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC 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:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無(wú) 升壓:是 回掃:是 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR)
LTC3830-1ES8#PBF 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC 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:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無(wú) 升壓:是 回掃:是 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR)
LTC3830-1ES8#TR 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC 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(wú) 升壓:是 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤(pán) 包裝:帶卷 (TR)
LTC3830-1ES8#TRPBF 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC 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(wú) 升壓:是 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤(pán) 包裝:帶卷 (TR)
LTC3830EGN 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:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤(pán) 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
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