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參數資料
| 型號： | MAX1534 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Efficiency, Triple-Output, Keep-Alive Power Supply for Notebook Computers |
| 中文描述： | 高效率、三路輸出、不間斷電源，用于筆記本電腦 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 398K |
| 代理商： | MAX1534 |
General Description
The MAX1534 is a high-efficiency, triple-output power
supply for keep-alive (always on) voltage rails. The
500mA buck regulator with an internal current-limited
0.5
PMOS steps down the battery or wall adapter
supply rail to a fixed 5V or an adjustable output voltage.
Two integrated low-voltage linear regulators follow this
output and provide two independent preset output volt-
ages of 3.3V and 1.8V, or adjustable output voltages.
The buck regulator utilizes a peak current-limit, pulse-
frequency modulation (PFM) architecture for highest
light-load efficiency to conserve battery life. High
switching frequencies (up to 200kHz) allow the use of
tiny surface-mount inductors and output capacitors.
Operation to 100% duty cycle minimizes dropout volt-
age (250mV at 500mA).
The low-dropout linear regulators use an internal
P-channel metal-oxide (PMOS) pass transistor to mini-
mize supply current and deliver up to 160mA each of
continuous current.
The MAX1534 includes a power-OK (POK) signal that
indicates all outputs are in regulation. The 4% accurate
threshold of the
SHDN
input permits its use as a low-
battery detector.
The MAX1534 is available in a small 16-pin thin QFN
(4mm
4mm) package, occupying 33% less board
space than discrete solutions.
Applications
Hand-Held Devices
Keep-Alive Supplies
Standby Supplies
Features
o
One Switching and Two Linear Regulators
o
Switching Regulator
+4.5V to +24V Input Voltage Range
Over 95% Efficiency
Up to 500mA Output Current
Up to 200kHz Switching Frequency
Fixed 5V or Adjustable Output Voltage
Internal 0.5
PMOS Switch
100% Maximum Duty Cycle for Low-Dropout
Operation
o
Two Low-Dropout Linear Regulators
Up to 160mA Output Current (Each)
3.3V/Adj Output Voltage for OUT1
1.8V/Adj Output Voltage for OUT2
o
±1.5% Accurate Output Voltage
o
±4% Accurate Shutdown for Low Battery
Detection
o
Thermal Shutdown Protection
o
POK Output
o
1mW Typical Standby Power
M
High-Efficiency, Triple-Output, Keep-Alive
Power Supply for Notebook Computers
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Ordering Information
19-2662; Rev 0; 10/02
PART
TEMP RANGE
-40°C to +85°C 16 Thin QFN (4mm
×
4mm)
PIN-PACKAGE
MAX1534ETE
MAX1534
POK
BP
PRESET
ILIM
FB1
FB2
V
OUT1
= +3.3V ALWAYS
V
OUT3
= +5V ALWAYS
V
IN
= +7V TO +24V
V
OUT2
= +1.8V ALWAYS
OUT1
OUT2
LDOIN
LX
FB3
IN
SHDN
GND
Typical Operating Circuit
Notebook and Sub-
Notebook Computers
Wake-On LAN
2 to 4 Li+ Cells Battery-
Powered Devices
Pin Configuration appears at end of data sheet.
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1534ETE | High-Efficiency, Triple-Output, Keep-Alive Power Supply for Notebook Computers |
| MAX1536 | 3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-Down Regulator with Dynamic Output Voltage Control |
| MAX1536ETI | 3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-Down Regulator with Dynamic Output Voltage Control |
| MAX1540ETJ | Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator |
| MAX1541ETL | Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1534ETE | 功能描述:電流和電力監控器、調節器 RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1534ETE+ | 功能描述:電流和電力監控器、調節器 PS Controllers for for Notebooks RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1534ETE+T | 功能描述:電流和電力監控器、調節器 PS Controllers for for Notebooks RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1534ETE-T | 功能描述:電流和電力監控器、調節器 RoHS:否 制造商:STMicroelectronics 產品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1535AETJ | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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