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| 型号： | TPS5110PWG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封装： | GREEN, PLASTIC, TSSOP-24 |
| 文件页数： | 1/43页 |
| 文件大小： | 813K |
| 代理商： | TPS5110PWG4 |
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TPS5110
SLVS025B APRIL 2002 REVISED JULY 2004
SYNCHRONOUSBUCK PWM CONTROLLER
WITH NMOS LDO CONTROLLER
1
www.ti.com
FEATURES
D Switching Mode Step-Down dc-to-dc
Controller With Fast LDO Controller
D Input Voltage Range
Switcher: 4.5 V to 28 V
LDO: 1.1 V to 3.6 V
D Output Voltage Range
Switcher: 0.9 V to 3.5 V
LDO: 0.9 V to 2.5 V
D Synchronous for High Efficiency
D Precision VREF (±1 %)
D PWM Mode Control: Max. 500-kHz Operation
D High-Speed Error Amplifier
D Overcurrent Protection With Temperature
Compensation Circuit
D Overvoltage and Undervoltage Protection
D Programmable Short-Circuit Protection
APPLICATIONS
D Notebook PCs, PDAs
D Consumer Game Systems
D DSP Application
SIMPLIFIED APPLICATION
DESCRIPTION
The TPS5110 provides one PWM-mode synchronous
buck regulator controller (SBRC) and one low drop-out
(LDO) regulator controller. The TPS5110 supports a
low-voltage/high-current power supply for I/O and other
peripherals in modern digital systems. The SBRC of the
TPS5110 automatically adjusts from PWM mode to
SKIP mode to maintain high efficiency under all load
conditions. The LDO controller drives an external
N-channel power MOSFET that realizes fast response
and ultra-low dropout voltage. A unique overshoot
protection circuit prevents a voltage hump at fast load
decreasing transients. The current protection circuit for
SBRC detects the drain-to-source voltage drop across
the low-side and high-side power MOSFET while it is
conducting. Also, the current protection circuit has a
temperature coefficient to compensate for the RDS(on)
variation of the MOSFET. This resistor-less current
protection simplifies the system design and reduces the
external parts count. The LDO controller includes
current-limit protection. Other features, such as
undervoltage
lockout,
power
good,
overvoltage,
undervoltage,
and
programmable
short-circuit
protection promote system reliability.
t time 100
s/div
IOUT = 0 A to 3 A
(1 A/ div)
COUT = 47 F
VOUT = 1.5 V
(50 mV/ div)
LDO Load Transient Response
UDG-02052
1
INV
6
GND
12 INV_LDO
24
23
17
LH
OUT_u
REG5V_IN
22
21
LL
OUT_d
16
15
LDO_IN
LDO_CUR
14
13
LDO_GATE
LDO_OUT
TPS5110PW
VIN
VO1
5 V
INPUT
VO2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
2002, Texas Instruments Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS5110PWR | 功能描述:DC/DC 开关控制器 Sync Buck w/NMOS LDO Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS5110PWRG4 | 功能描述:DC/DC 开关控制器 Sync Buck w/NMOS LDO Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS51113 | 制造商:TI 制造商全称:Texas Instruments 功能描述:SYNCHRONOUS BUCK CONTROLLER WITH HIGH-CURRENT GATE DRIVER |
| TPS51113DRCR | 功能描述:DC/DC 开关控制器 4.5-13.2V Synch Buck Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS51113DRCT | 功能描述:DC/DC 开关控制器 4.5-13.2V Synch Buck Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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