鈻?/div>
I
CC
< 1碌A(chǔ) in Shutdown Mode
1.5MHz Operating Frequency
Shutdown Isolates Output from Input
Description
The FAN5631/FAN5632 is an advanced, third-generation
switched capacitor step-down DC/DC converter utilizing Fair-
child's proprietary ScalarPump鈩?technology. This innovative
architecture utilizes scalar switch re-con鏗乬uration and fractional
switching techniques to produce low output ripple, lower ESR
spikes, and improve ef鏗乧iency over a wide load range.
The FAN5631/FAN5632 produces a 鏗亁ed regulated output volt-
age from an input voltage of 2.2V to 5V. Customized output volt-
ages are available in 100mV increments from 1V to 1.8V.
Contact a Fairchild sales representative for customized output
voltage options.
In order to maximize ef鏗乧iency, the FAN5631/5632 achieves
regulation by skipping pulses. Depending upon load current, the
size of the switches are scaled dynamically; consequently,
current spikes and EMI are minimized. An internal soft-start
circuitry prevents excessive current drawn from the supply. The
device is internally protected against short circuit and over
temperature conditions.
The FAN5631 has a dual output voltage feature. When V
SEL
is
high, V
OUT
is 1.5V and when V
SEL
is low, V
OUT
is 1.2V. Other
output voltage options are available upon request.
In addition, the FAN5632 has an ef鏗乧iency optimizer feature
that, when enabled, changes the switch mode con鏗乬uration
from 2:1 to 1:1 at the lower threshold of V
IN
. The ef鏗乧iency is
then maintained at its peak level over a wider range of input volt-
ages. In addition, V
OUT
will vary between 1.2V to 1.5V as a
result of this ef鏗乧iency optimization. If the ef鏗乧iency optimizer is
not enabled, V
OUT
is regulated to 1.5V.
Both the FAN5631 and FAN5632 are available in a 3x3mm
10-lead MLP package.
鈻?/div>
Soft-Start Limits In-Rush Current
鈻?/div>
Short Circuit and Over Temperature Protection
鈻?/div>
Minimum External Component Count
鈻?/div>
Available in a 3x3mm 10-Lead MLP Package
Applications
鈻?/div>
Cell Phones
鈻?/div>
Handheld Computers
鈻?/div>
Portable Electronic Equipment
鈻?/div>
Core Supply to Next Generation Processors
鈻?/div>
Low Voltage DC Bus
鈻?/div>
Digital Cameras
鈻?/div>
DSP Supplies
Ordering Information
Product Number
FAN5631
FAN5632
Package Type
3x3mm 10-Lead MLP
3x3mm 10-Lead MLP
Order Code
FAN5631MPX
FAN5632MPX
漏2005 Fairchild Semiconductor Corporation
1
www.fairchildsemi.com
FAN5631/FAN5632 Rev. 1.0.0
FAN5631MPX 產(chǎn)品屬性
3,000
集成電路 (IC)
PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器
-
降壓（降壓），切換電容（充電泵）
固定
1
1.2V，1.5V
2.2 V ~ 5.5 V
-
1.5MHz
250mA
無
-40°C ~ 85°C
表面貼裝
10-WFDFN 裸露焊盤
帶卷 (TR)
10-MLP
FEB176-ND - BOARD EVAL FOR FAN5631
FAN5631MPX-NDFAN5631MPXTR
FAN5631MPX相關(guān)型號(hào)PDF文件下載
-
型號(hào)
版本
描述
廠商
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