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| 型号： | MAX1536ETI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 3.6A 28TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.7 V ~ 5.5 V |
| 输入电压： | 3 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1.4MHz |
| 电流 - 输出： | 3.6A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
ATION
ILABLE
19-2729; Rev 1; 8/05
EVALU
AVA
KIT
3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-
Down Regulator with Dynamic Output Voltage Control
General Description
The MAX1536 constant-off-time, pulse-width-modulated
(PWM) step-down DC-to-DC converter is ideal for use in
+5.0V and +3.3V to low voltages for notebook and sub-
notebook computers. The MAX1536 features an internal
PMOS power switch and internal synchronous rectifica-
tion for high efficiency and reduced component count. No
external Schottky diode is required across the internal
synchronous rectifier switch. The internal 54m ? PMOS
power switch and 47m ? NMOS synchronous-rectifier
switch easily deliver continuous load currents up to 3.6A.
The MAX1536 produces dynamically adjustable output
voltages for chipsets and graphics processor cores using
a logic-level control signal. The MAX1536 achieves effi-
ciencies as high as 96%.
The MAX1536 uses a unique current-mode, constant-off-
time, PWM control scheme. It has selectable Idle
Mode TM to maintain high efficiency during light-load
operation, or fixed-PWM mode for low output ripple. The
programmable constant-off-time architecture allows a
wide range of switching frequencies up to 1.4MHz, opti-
mizing performance trade-offs between efficiency, output
switching noise, component size, and cost. The
MAX1536 features a digital soft-start to limit surge cur-
rents during startup, a 100% duty-cycle mode for low-
dropout operation, and a low-power shutdown mode that
disconnects the input from the output and reduces supply
current below 1μA. The MAX1536 is available in a 28-pin
thin QFN package with an exposed backside pad.
Features
? Dynamically Selectable Output Voltage from
+0.7V to V IN
? Internal PMOS/NMOS Switches
54m ? /47m ? On-Resistance at V IN = +4.5V
63m ? /53m ? On-Resistance at V IN = +3.0V
? +3.0V to +5.5V Input Voltage Range
? 1.4MHz Maximum Switching Frequency
? 2V ±0.75% Reference Output
? Constant-Off-Time PWM Operation
? Selectable Idle Mode/PWM Operation at Light
Loads
? 100% Duty Factor in Dropout
? Digital Soft-Start Inrush Current Limiting
? <1μA Typical Shutdown Supply Current
? <750μA Quiescent Supply Current
? Thermal Shutdown
? 1% V OUT Accuracy Over Line and Load
? External Reference Input
? Power-Good Window Comparator
? Selectable Power-Good Blanking Time During
Output-Voltage Transition
Ordering Information
________________________Applications
PART
TEMP RANGE
PIN-PACKAGE
MAX1536ETI
-40 C to +85 C
Chipset/Graphics Cores
with Dual-Supply Voltages
Active Termination Buses
Notebook Computers
DDR Memory Termination
o o
MAX1536ETI+ -40 o C to +85 o C
+ Denotes lead-free package.
28 Thin QFN 5mm x 5mm
28 Thin QFN 5mm x 5mm
TOP VIEW
Pin Configuration
Minimal Operating Circuit
21
20
19
18
17
16
15
V IN
+3.0V TO +5.5V
V OUT
+0.7V TO V IN
PGND
PGND
LX
N.C.
22
23
24
25
14
13
12
11
REF
REFIN
OD
OD
IN
V CC
SHDN
LX
FB
PGND
AGND
MAX1536
LX
26
10
GATE
COMP
MAX1536
REF
PGND
27
9
TOFF
PGND
28
EXPOSED PADDLE
8
N.C.
PGOOD
1
2
3
4
5
6
7
TOFF
REFIN
SKIP
THIN QFN
A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.
Idle Mode is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ 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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1536ETI+ | 功能描述:直流/直流开关调节器 3.6A 1.4MHz Step-Dwn w/Dynamic Out V RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1536ETI+T | 功能描述:直流/直流开关调节器 3.6A 1.4MHz Step-Dwn w/Dynamic Out V RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1536ETI-T | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1536EVKIT | 功能描述:直流/直流开关调节器 Evaluation Kit for the MAX1536 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1537AETX+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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