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参数资料
| 型号： | MAX1534ETE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/16页 |
| 文件大小： | 0K |
| 描述： | IC PWR SUPPLY CONTROLLER 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 电源控制器 |
| 输入电压： | 4.5 V ~ 26 V |
| 电流 - 电源： | 15µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
High-Efficiency, Triple-Output, Keep-Alive
Power Supply for Notebook Computers
Pin Description
PIN
1
2
3
4
5, 8
6, 7
9
10
11
12
13
14
15
16
NAME
SHDN
POK
GND
ILIM
LX
IN
OUT2
LDOIN
OUT1
BP
FB1
FB2
PRESET
FB3
FUNCTION
Shutdown Control Input. Drive SHDN above 1V to start up, and below 0.9V to shut down. LX is high
impedance in shut down, and supply current reduces to 3.5μA. Connect SHDN to IN for automatic
startup. SHDN can be connected to IN through a resistive voltage-divider to implement a
programmable undervoltage lockout.
Open-Drain Power-OK (POK) Output. POK asserts low while any output voltage is below the reset
threshold. Connect a 100k ? pullup resistor to OUT_. POK is driven low in shut down. If not used,
leave this pin unconnected.
Ground. Connect backside pad to GND.
Peak LX Current Control Input. Connect to IN for 1000mA peak LX current. Connect to GND for
500mA peak LX current.
Inductor Connection. Connect LX to external inductor and diode as shown in Figure 1. Both LX pins
must be connected together on the PC board.
Buck Regulator Input Supply Voltage. Input voltage range is 4.5V to 24V. Both IN pins must be
connected together on the PC board.
Regulated LDO2 Output Voltage. Sources up to 160mA guaranteed. Bypass with 2.2μF (<0.2 ?
typical ESR) ceramic capacitor to GND.
Input Supply for both LDOs. Supply voltage can range from 2.5V to 5.5V. Bypass with 2.2μF capacitor
to GND (see Capacitor Selection and LDO Stability ).
Regulated LDO1 Output Voltage. Sources up to 160mA guaranteed. Bypass with 2.2μF (<0.2 ?
typical ESR) ceramic capacitor to GND.
LDO Reference Noise Bypass. Bypass with a low-leakage 0.01μF ceramic capacitor for reduced
noise at both outputs.
Feedback Input for LDO1. For a fixed 3.3V output, connect PRESET and FB1 to GND. For an
adjustable output, connect PRESET = IN and connect a resistive divider between OUT1 and GND.
Feedback Input for LDO2. For a fixed 1.8V output, connect PRESET and FB2 to GND. For an
adjustable output, connect PRESET = IN and connect a resistive divider between OUT2 and GND.
Preset Feedback Select Input. Connect to GND for the preset 5V buck output voltage, preset 3.3V
OUT1 output voltage, and preset 1.8V OUT2 output voltage. Connect PRESET to IN to select
adjustable feedback mode for all three regulators.
Buck Output Feedback Input. For a fixed 5.0V output, connect PRESET to GND and FB3 to OUT3. For
an adjustable output, connect PRESET to IN and connect a resistive divider between OUT3 and GND.
Detailed Description
The MAX1534 regulator provides efficient light-load
power conversion for notebook computers or hand-held
devices that require keep-alive power or standby
power. The main step-down buck regulator uses a
unique peak current-limited control scheme, providing
high efficiency at light loads over a wide load range.
Operation up to 100% duty cycle allows the lowest pos-
sible dropout voltage, increasing the usable supply
voltage range. Under no load, the MAX1534 consumes
only 1mW, and in shutdown mode, it draws only 3.5μA.
The internal 24V switching MOSFET, internal current
sensing, and a high-switching frequency minimize PC
board space and component costs.
The MAX1534 includes two low-noise, low-dropout,
low-quiescent-current linear regulators. The linear regu-
lators are available with preset output voltages of 3.3V
and 1.8V. Each linear regulator can supply loads up to
160mA.
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1535AETJ | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX1535AETJ+T | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX1535AETJT | 制造商:MAXIM 功能描述:New |
| MAX1535AETJ-T | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX1535BETJ | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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