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參數(shù)資料
| 型號： | SC1186CSW |
| 廠商： | Semtech Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 無電容，NMOS管，150mA的低壓差穩(wěn)壓器的反向電流保護 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 109K |
| 代理商： | SC1186CSW |
PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER, DUAL LOW DROPOUT
REGULATOR CONTROLLER
1999 SEMTECH CORP.
PRELIMINARY - December 2, 1999
652 MITCHELL ROAD NEWBURY PARK CA 91320
SC1186
1
DESCRIPTION
The SC1186 combines a synchronous voltage mode
controller with two low-dropout linear regulators
providing most of the circuitry necessary to
implement three DC/DC converters for powering
advanced microprocessors such as Pentium
II & III.
The SC1186 switching section features an integrated
5 bit D/A converter, latched drive output for
enhanced noise immunity, pulse by pulse current
limiting and logic compatible shutdown. The SC1186
switching section operates at a fixed frequency of
140kHz, providing an optimum compromise between
size, efficiency and cost in the intended application
areas. The integrated D/A converter provides
programmability of output voltage from 2.0V to 3.5V
in 100mV increments and 1.30V to 2.05V in 50mV
increments with no external components.
The SC1186 linear sections are low dropout regula-
tors with short circuit protection, supplying 1.5V for
GTL bus and 2.5V for non-GTL I/O. The Reference
voltage is made available for external linear
regulators.
Pentium is a registered trademark of Intel Corporation
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
BLOCK DIAGRAM
R
S
Q
+
-
70mV
+
-
+
-
2.5V FET
CONTROLLER
1.5V FET
CONTROLLER
1.265V
REF
ERROR
AMP
D/A
SHOOT-THRU
CONTROL
VCC
CS-
BSTH
DH
PGNDH
EN
CS+
BSTL
DL
PGNDL
VOSENSE
LDOEN
LDOS2
VID3
VID2
VID1
VID0
LDOS1
AGND
REF
GATE2
GATE1
LDOV
REF
VID4
CURRENT
LIMIT
LEVEL SHIFT AND
SYNCHRONOUS
MOSFET DRIVE
OSCILLATOR
PIN CONFIGURATION
AGND
GATE1
LDOS1
LDOS2
VCC
REF
LDOEN
CS-
CS+
PGNDH
DH
PGNDL
1
2
3
4
5
6
7
8
9
LDOV
VID0
VID1
VID2
VID3
VID4
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VOSENSE
EN
BSTH
BSTL
DL
GATE2
Top View
(24 Pin SOIC)
FEATURES
Synchronous design, enables no heatsink solution
95% efficiency (switching section)
5 bit DAC for output programmability
Designed for Intel Pentium
ll & III requirements
1.5V, 2.5V short circuit protected linear controllers
1.265V ± 1.5% Reference available
APPLICATIONS
Pentium
ll & III microprocessor supplies
Flexible motherboards
1.3V to 3.5V microprocessor supplies
Programmable triple power supplies
ORDERING INFORMATION
Part Number
(1)
Package
Linear
Voltage
1.5V/2.5V 0° to 125°C
Temp.
Range (T
J
)
SC1186CSW
SO-24
Note:
(1) Add suffix ‘TR’ for tape and reel.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC1186 | Programmable Synchronous DC/DC Converter, Dual LDO Controller(兼有可編程同步DC/DC控制器(1.3-3.5V輸出)和雙固定(1.5V和2.5V)輸出低壓差穩(wěn)壓器) |
| SC1189 | Programmable synchronous DC/DC Converter, Dual LDO Controller |
| SC1189SWTR | Programmable synchronous DC/DC Converter, Dual LDO Controller |
| SC1202A | 600mA Low Dropout Positive Voltage Regulator |
| SC1202ACST | 600mA Low Dropout Positive Voltage Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC1186CSWTRT | 制造商:Semtech Corporation 功能描述:Programmable Synchronous DC Converter 24-Pin SOIC T/R |
| SC1187ASWTR | 制造商:Semtech Corporation 功能描述:DC DC Converter, Programmable Synchronous Dc/Dc Converter, Dual Ldo Controller |
| SC1189 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Programmable Synchronous DC/DC Converter, Dual LDO Controller |
| SC1189_05 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Programmable Synchronous DC/DC Converter, Dual LDO Controller |
| SC1189_07 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Programmable Synchronous DC/DC Converter, Dual LDO Controller |
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