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參數資料
| 型號： | MAX1540ETJ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator |
| 中文描述： | DUAL SWITCHING CONTROLLER, 620 kHz SWITCHING FREQ-MAX, QCC32 |
| 封裝： | 5 X 5 MM, 0.80 MM HEIGHT, MO-220-WHHD, TQFN-32 |
| 文件頁數： | 1/49頁 |
| 文件大小： | 833K |
| 代理商： | MAX1540ETJ |
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General Description
The MAX1540/MAX1541 dual pulse-width modulation
(PWM) controllers provide the high efficiency, excellent
transient response, and high DC-output accuracy nec-
essary for stepping down high-voltage batteries to gen-
erate low-voltage chipset and RAM power supplies in
notebook computers.
The Maxim proprietary Quick-PWM controllers are
free running, constant on-time with input feed forward.
This configuration provides ultra-fast transient
response, wide input-output (I/O) differential range, low
supply current, and tight load-regulation characteris-
tics. The controllers can accurately sense the inductor
current across an external current-sense resistor in
series with the output to ensure reliable overload and
inductor saturation protection. Alternatively, the con-
trollers can use the synchronous rectifier itself or loss-
less inductor current-sensing methods to provide
overload protection with lower power dissipation.
For a single step-down PWM controller with inductor-
saturation protection, external-reference input voltage,
and dynamically selectable output voltages, refer to the
MAX1992/MAX1993 data sheet.
Applications
Notebook Computers
Core/IO Supplies as Low as 0.7V
0.7V to 5.5V Supply Rails
CPU/Chipset/GPU with Dynamic Voltage Core
Supplies (MAX1541)
DDR Memory Termination (MAX1541)
Active Termination Buses (MAX1541)
Features
Inductor-Saturation Protection
Accurate Differential Current-Sense Inputs
Dual Ultra-High-Efficiency Quick-PWMs with
100ns Load-Step Response
MAX1540
1.8V/1.2V Fixed or 0.7V to 5.5V Adjustable
Output (OUT1)
2.5V/1.5V Fixed or 0.7V to 5.5V Adjustable
Output (OUT2)
Fixed 5V, 100mA Linear Regulator
MAX1541
External Reference Input (REFIN1)
Dynamically Selectable Output Voltage—0.7V
to 5.5V (OUT1)
2.5V/1.8V Fixed or 0.7V to 5.5V Adjustable
Output (OUT2)
Optional Power-Good and Fault Blanking
During Transitions
Fixed 5V or Adjustable 100mA Linear Regulator
1% V
OUT
Accuracy over Line and Load
2V to 28V Battery Input Range
170kHz to 620kHz Selectable Switching
Frequency
Overvoltage/Undervoltage-Protection Option
1.7ms Digital Soft-Start
Drives Large Synchronous-Rectifier FETs
2V ±0.7% Reference Output
Separate Power-Good Window Comparators
Pin Configurations
M
Dual Step-Down Controllers with Saturation
Protection, Dynamic Output, and Linear Regulator
________________________________________________________________
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
THIN QFN
TOP VIEW
3
3
3
2
2
2
2
O
O
C
C
F
O
P
2
D
9
1
1
1
1
1
1
C
C
F
O
P
D
L
1
B
17
18
19
20
21
22
23
GND
DL2
V+
LDOOUT
DL1
LDOON
BST1
8
7
6
5
4
3
2
REF
ILIM2
ILIM1
V
CC
TON
LSAT
SKIP
MAX1540
1
OVP/UVP
24
LX1
19-2861; Rev 2; 1/05
EVALUATION KIT
AVAILABLE
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
Ordering Information
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
32 Thin QFN 5mm x 5mm
40 Thin QFN 6mm x 6mm
MAX1540
ETJ
MAX1541
ETL
Pin Configurations continued at end of data sheet.
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1541ETL | Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator |
| MAX1573EVKIT | MAX1573 Evaluation Kit |
| MAX1573TQFNEVKIT | MAX1573 Evaluation Kit |
| MAX1573 | MAX1573 Evaluation Kit |
| MAX1583EVKIT | MAX1583 Evaluation Kit |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1540ETJ+ | 功能描述:DC/DC 開關控制器 Dual Step-Down Ctlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1540ETJ+T | 功能描述:DC/DC 開關控制器 Dual Step-Down Ctlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1540ETJ-T | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1540EVKIT | 功能描述:DC/DC 開關控制器 Evaluation Kit for the MAX1540 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX15411GTM+ | 功能描述:模數轉換器 - ADC New RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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