參數資料
型號： MAX1536
廠商： Maxim Integrated Products, Inc.
英文描述： 3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-Down Regulator with Dynamic Output Voltage Control
中文描述： 3.6A、1.4MHz、低電壓、內置開關、降壓型穩(wěn)壓器，帶有動態(tài)輸出電壓控制
文件頁數： 1/19頁
文件大小： 369K
代理商： MAX1536
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.
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
Ω
PMOS
power switch and 47m
Ω
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.
________________________Applications
Chipset/Graphics Cores
with Dual-Supply Voltages
Active Termination Buses
Features
Dynamically Selectable Output Voltage from
+0.7V to V
IN
Internal PMOS/NMOS Switches
54m
Ω
/47m
Ω
On-Resistance at V
IN
= +4.5V
63m
Ω
/53m
Ω
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
19-2729; Rev 1; 8/05
M
3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-
Down Regulator with Dynamic Output Voltage Control
________________________________________________________________
Maxim Integrated Products
1
Minimal Operating Circuit
Idle Mode is a trademark of Maxim Integrated Products, Inc.
PART
TEMP RANGE
-40
o
C to +85
o
C
-40
o
C to +85
o
C
PIN-PACKAGE
28 Thin QFN 5mm x 5mm
28 Thin QFN 5mm x 5mm
MAX1536ETI
MAX1536ETI+
+
Denotes lead-free package.
MAX1536
IN
V
CC
SKIP
TOFF
PGOOD
SHDN
COMP
LX
FB
PGND
AGND
REF
REFIN
V
+3.0V TO +5.5V
V
+0.7V TO V
IN
Pin Configuration
I
L
I
S
S
F
C
L
I
I
P
F
V
C
A
PGND
LX
N.C.
LX
PGND
PGND
REF
REFIN
OD
OD
GATE
TOFF
N.C.
TOP VIEW
THIN QFN
PGND
28
27
26
25
24
23
22
8
9
10
11
12
13
14
15
16
17
18
19
20
21
7
6
5
4
3
2
1
MAX1536
EXPOSED PADDLE
A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.
Notebook Computers
DDR Memory Termination
EVALUATION KIT
AVAILABLE
LCJ/JH 9/22/05 (P1)
相關PDF資料
PDF描述
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
MAX1573EVKIT MAX1573 Evaluation Kit
MAX1573TQFNEVKIT MAX1573 Evaluation Kit
相關代理商/技術參數
參數描述
MAX1536ETI 功能描述:直流/直流開關調節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MAX1536ETI+ 功能描述:直流/直流開關調節(jié)器 3.6A 1.4MHz Step-Dwn w/Dynamic Out V RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MAX1536ETI+T 功能描述:直流/直流開關調節(jié)器 3.6A 1.4MHz Step-Dwn w/Dynamic Out V RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MAX1536ETI-T 功能描述:直流/直流開關調節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MAX1536EVKIT 功能描述:直流/直流開關調節(jié)器 Evaluation Kit for the MAX1536 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
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