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參數(shù)資料
| 型號： | SP6138ER1-L |
| 廠商： | EXAR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, 2800 kHz SWITCHING FREQ-MAX, QCC16 |
| 封裝： | 3 X 3 MM, LEAD FREE, MO-220VEED-4, QFN-16 |
| 文件頁數(shù)： | 1/17頁 |
| 文件大小： | 958K |
| 代理商： | SP6138ER1-L |
Oct 24-06 Rev J
SP638 Synchronous Buck Controller
2006 Sipex Corporation
Solved by
TM
SP6138
FEATURES
■
5V to 24V Input step down converter
■
Up to 3A output in a small form factor
■
Highly integrated design, minimal components
■
UVLO Detects Both VCC and VIN
■
Overcurrent circuit protection with auto-restart
■
Power Good Output, ENABLE Input
■
Maximum Controllable Duty Cycle Ratio up to 92%
■
Wide BW amp allows Type II or III compensation
■
Programmable Soft Start
■
Fast Transient Response
■
Available in 6-Pin QFN package
■
External Driver Enable/Disable
■
U.S. Patent #6,922,04
Synchronous Buck Controller
The SP638 is a synchronous step-down switching regulator controller optimized for small
footprint. The part is designed to be especially attractive for single supply step down con-
version from 5V to 24V. The SP638 is designed to drive a pair of external NFETs using a
fixed 2.5 MHz frequency, PWM voltage mode architecture. Protection features include UVLO,
thermal shutdown, output short circuit protection, and overcurrent protection with auto restart.
The device also features a PWRGD output and an enable input. The SP638 is available in
a space saving 6-pin QFN and offers excellent thermal performance.
TYPICAL APPLICATION CIRCUIT
Now Available in Lead Free Packaging
DESCRIPTION
RS3
4.99K
CBST
0.1uF
R1
68.1K, 1%
RZ3
1K
R2
21.5K, 1%
MT/MB, Si7214DN
47 m, 30V
CZ3
47pF
(Co-Packaged FETs)
CP1
6 pF
RZ2
54.9K
CZ2
100pF
CF1
18pF
12V
CSP
6.8nF
VIN
GND
VOUT
GND
SS
VCC
POWERGOOD
CSS
47nF
ISP
ISN
EN
PGND
GND
PWRGD
VFB
COMP
VIN
BST
GH
SWN
UVIN
GL
3.3V
0-2A
DBST
SD101AWS
CVCC
4.7uF
C5
0.1uF
R3 10K
SP6138
C1
4.7uF
NC
CS
0.1uF
RS2
1K
RS1
1K
COOPER, SD25-2R2
2.2uH, 2.8A, 31m
C2
22uF
ENABLE
Note: Die-attach paddle is connected to GND
ISN
SS
EN
C
O
M
P
SP6138
16 Pin QFN
3mm x 3mm
V
IN
8
7
6
5
4
3
2
1
GH
BST
UV
IN
GL
PGND
VFB
12
11
10
9
16
15
14
13
GND
PWRG
D
ISP
SWN
V
CC
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SP6138ER1-L/TR | 功能描述:開關變換器、穩(wěn)壓器與控制器 Synchronous Controller RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| SP6139 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Wide Input, 1.3MHz Synchronous PWM Controller |
| SP6139EU | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Wide Input, 1.3MHz Synchronous PWM Controller |
| SP6139EU/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Wide Input, 1.3MHz Synchronous PWM Controller |
| SP6139EU-L | 功能描述:開關變換器、穩(wěn)壓器與控制器 Wide Input, 1.3MHz Synchronous RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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