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參數(shù)資料
| 型號(hào)： | SC1182 |
| 廠商： | Semtech Corporation |
| 元件分類(lèi)： | 基準(zhǔn)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(wú)電容，NMOS管，150mA的低壓差穩(wěn)壓器的反向電流保護(hù) |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大小： | 130K |
| 代理商： | SC1182 |
PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER, DUAL LOW DROPOUT
REGULATOR CONTROLLER
1998 SEMTECH CORP.
August 25, 1998
652 MITCHELL ROAD NEWBURY PARK CA 91320
SC1182/3
1
ORDERING INFORMATION
DESCRIPTION
The SC1182/3 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 (Klamath) or
Deschutes.
The SC1182/3 switching section features an integrat-
ed 5 bit D/A converter, pulse by pulse current limiting,
integrated power good signaling, and logic compatible
shutdown. The SC1182/3 switching section operates
at a fixed frequency of 200kHz, providing an optimum
compromise between size, efficiency and cost in the
intended application areas. The integrated D/A con-
verter 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 compo-
nents.
The SC1182/3 linear sections are low dropout regula-
tors. The SC1182 supplies 1.5V for GTL bus and 2.5V
for non-GTL I/O.
For the SC1183 both LDO’s are adjustable.
Pentium is a registered trademark of Intel Corporation
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
BLOCK DIAGRAM
2.5V/ADJ.
1.265V
REF.
FET
C1.5V/ADJ.
FET
CONTROLLER
REF.
LDOV
PIN CONFIGURATION
AGND
GATE1
LDOS1
LDOS2
VCC
OVP
PWRGOOD
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
On chip power good function
Designed for Intel Pentium
ll VRM8.1 require-
ments
1.5V, 2.5V or Adj. @ 1% for linear section
APPLICATIONS
Pentium
ll or Deschutes microprocessor supplies
Flexible motherboards
1.3V to 3.5V microprocessor supplies
Programmable triple power supplies
Part Number
(1)
Package
Linear
Voltage
Temp.
Range (T
J
)
SC1182CSW
SO-24
1.5V/2.5V 0° to 125°C
SC1183CSW
SO-24
Adj.
0° to 125°C
Note:
(1) Add suffix ‘TR’ for tape and reel.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC1183 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| SC1185A | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| SC1185ACSW | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| SC1185CSW | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| SC1185 | Programmable Synchronous DC/DC Converter, Dual LDO Controller(兼有可編程同步DC/DC控制器和雙固定(1.5V和2.5V)輸出低壓差穩(wěn)壓器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC1182CSW | 制造商:Semtech Corporation 功能描述: |
| SC1183 | 制造商:SEMTECH 制造商全稱(chēng):Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER |
| SC1183CSW | 制造商:SEMTECH 制造商全稱(chēng):Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER |
| SC1185 | 制造商:SEMTECH 制造商全稱(chēng):Semtech Corporation 功能描述:PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER |
| SC1185_05 | 制造商:SEMTECH 制造商全稱(chēng):Semtech Corporation 功能描述:Programmable Synchronous DC/DC |
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