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參數(shù)資料
| 型號： | MAX1537A |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Efficiency, 5x Output, Main Power-Supply Controllers for Notebook Computers |
| 中文描述： | 高效率、5路輸出、主電源控制器，用于筆記本電腦 |
| 文件頁數(shù)： | 1/38頁 |
| 文件大?。?/td> | 1427K |
| 代理商： | MAX1537A |
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General Description
The MAX1533A/MAX1537A are dual step-down, switch-
mode power-supply (SMPS) controllers with synchro-
nous rectification, intended for main 5V/3.3V power
generation in battery-powered systems. Fixed-frequen-
cy operation with optimal interleaving minimizes input
ripple current from the lowest input voltages up to the
26V maximum input. Optimal 40/60 interleaving allows
the input voltage to go down to 8.3V before duty-cycle
overlap occurs, compared to 180
°
out-of-phase regula-
tors where the duty-cycle overlap occurs when the
input drops below 10V. Output current sensing pro-
vides accurate current limit using a sense resistor.
Alternatively, power dissipation can be reduced using
lossless inductor current sensing.
Internal 5V and 3.3V linear regulators power the
MAX1533A/MAX1537A and their gate drivers, as well as
external keep-alive loads, up to a total of 100mA. When
the main PWM regulators are in regulation, automatic
bootstrap switches bypass the internal linear regulators,
providing currents up to 200mA from each linear output.
An additional 5V to 23V adjustable internal 150mA linear
regulator is typically used with a secondary winding to
provide a 12V supply.
The MAX1533A/MAX1537A include on-board power-up
sequencing, a power-good (PGOOD) output, digital
soft-start, and internal soft-shutdown output discharge
that prevents negative voltages on shutdown. The
MAX1533A is available in a 32-pin 5mm x 5mm thin
QFN package, and the MAX1537A is available in a 36-
pin 6mm x 6mm thin QFN package. The exposed back-
side pad improves thermal characteristics for
demanding linear keep-alive applications.
Applications
2 to 4 Li+ Cells Battery-Powered Devices
Notebook and Subnotebook Computers
PDAs and Mobile Communicators
Features
Fixed-Frequency, Current-Mode Control
40/60 Optimal Interleaving
Accurate Differential Current-Sense Inputs
Internal 5V and 3.3V Linear Regulators with
100mA Load Capability
Auxiliary 12V or Adjustable 150mA Linear
Regulator (MAX1537A Only)
Dual Mode Feedback—3.3V/5V Fixed or
Adjustable Output (Dual Mode) Voltages
200kHz/300kHz/500kHz Switching Frequency
Versatile Power-Up Sequencing
Adjustable Overvoltage and Undervoltage
Protection
6V to 26V Input Range
2V ±0.75% Reference Output
Power-Good Output
Soft-Shutdown
5μA (typ) Shutdown Current
M
High-Efficiency, 5x Output, Main Power-Supply
Controllers 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
32
31
30
29
28
27
26
9
10
11
12
13
14
15
18
19
20
21
22
23
24
7
6
5
4
3
2
1
MAX1533A
THIN QFN
5mm x 5mm
TOP VIEW
ON3
ON5
FSEL
ILIM3
ILIM5
REF
GND
8
V
CC
S
D
B
L
I
C
25
C
FB5
LDO5
DL5
PGND
DL3
LDO3
FB3
17
CSL3
O
L
16
C
B
D
U
P
P
S
Pin Configurations
Ordering Information
PART
TEMP RANGE
-40°C to +85°C 32 Thin QFN 5mm x 5mm
-40°C to +85°C 32 Thin QFN 5mm x 5mm
-40°C to +85°C 36 Thin QFN 6mm x 6mm
-40°C to +85°C 36 Thin QFN 6mm x 6mm
+
Denotes lead-free package.
PIN-PACKAGE
MAX1533A
ETJ
MAX1533AETJ+
MAX1537A
ETX
MAX1537AETX+
19-4023; Rev 0; 4/06
EVALUATION KIT
AVAILABLE
Dual Mode is a trademark of Maxim Integrated Products, Inc.
Pin Configurations continued at end of data sheet.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1533 | High-Efficiency, 5x Output, Main Power-Supply Controllers for Notebook Computers |
| MAX1533ETJ | High-Efficiency, 5x Output, Main Power-Supply Controllers for Notebook Computers |
| MAX1537ETX | High-Efficiency, 5x Output, Main Power-Supply Controllers for Notebook Computers |
| MAX153MJP | 1Msps, レP-Compatible, 8-Bit ADC with 1レA Power-Down |
| MAX153EWP | 1Msps, レP-Compatible, 8-Bit ADC with 1レA Power-Down |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1537AETX+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1537ETX | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1537ETX-T | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1537EVKIT | 制造商:Maxim Integrated Products 功能描述:MAIN POWER SUPPLY CONTROLLER FOR NOTEBOOK - Bulk |
| MAX1538ETI | 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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