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参数资料
| 型号： | TPS57040QDGQRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | GREEN, PLASTIC, MSOP-10 |
| 文件页数： | 1/51页 |
| 文件大小： | 1871K |
| 代理商： | TPS57040QDGQRQ1 |
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EFFICIENCY
vs
LOADCURRENT
0
10
20
30
40
50
60
70
80
0
0.1
0.2
0.3
0.4
LoadCurrent- A
Efficiency-%
100
90
0.5
V =12V,
V =5.0V,
f
=700kHz
I
O
sw
PH
VIN
GND
BOOT
VSENSE
COMP
TPS57040-Q1
EN
RT /CLK
SS /TR
PWRGD
SLVSAP4A
– DECEMBER 2010 – REVISED APRIL 2011
0.5-A 42-V STEP-DOWN SWIFT
DC/DC CONVERTER WITH Eco-mode
Check for Samples: TPS57040-Q1
1
FEATURES
Qualified for Automotive Applications
Adjustable Undervoltage Lockout Voltage and
Hysteresis
3.5-V to 42-V Input Voltage Range
0.8-V Internal Voltage Reference
200-m
High-Side MOSFET
Supported by SwitcherPro
Software Tool
High Efficiency at Light Loads with a Pulse
Skipping Eco-Mode
Control Scheme
116-
μA Operating Quiescent Current
For SWIFT
Documentation, See the TI
1.5-
μA Shutdown Current
Website at http://www.ti.com/swift
100-kHz to 2.5-MHz Switching Frequency
Synchronizes to External Clock
APPLICATIONS
Adjustable Slow Start/Sequencing
12-V and 24-V Industrial and Commercial Low
Undervoltage and Overvoltage Power Good
Power Systems
Output
Aftermarket Auto Accessories: Video, GPS,
Entertainment
DESCRIPTION
The TPS57040-Q1 device is a 42-V 0.5-A step-down regulator with an integrated high-side MOSFET. Current
mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip
mode reduces the no load, regulated output supply current to 116
μA. Using the enable pin, shutdown supply
current is reduced to 1.5
μA, when the enable pin is low.
Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage
startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open
drain power good signal indicates the output is within 92% to 109% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold
back and thermal shutdown protects the part during an overload condition.
The TPS57040-Q1 is available in a 10-pin thermally enhanced MSOP PowerPAD
package (DGQ) and a
10-pin SON package (DRC).
SIMPLIFIED SCHEMATIC
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright
2010–2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS57040QDRCRQ1 | 功能描述:直流/直流开关转换器 3.5-42Vin,0.5A Step Down SWIFT Cnvrtr RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| TPS57060QDGQRQ1 | 功能描述:直流/直流开关转换器 3.5-60Vin,0.5A,2.5 MHz Step Down Cnvrtr RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| TPS57060QDRCRQ1 | 功能描述:直流/直流开关转换器 3.5-60Vin,0.5A,2.5 MHz Step Down Cnvrtr RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| TPS57112QRTERQ1 | 功能描述:直流/直流开关转换器 2.95-6Vin,2A,2MHz Sync St Down Cnvrtr RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| TPS57114EVM | 制造商:Texas Instruments 功能描述:TPS57114EVM - Boxed Product (Development Kits) |
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