PAC27A03 [CALMIRCO]
P/ACTIVE PRECISION VOLTAGE DIVIDER NETWORK FOR LINEAR TECHNOLOGY LT1430/1017; P / ACTIVE精密分压器网络凌特公司LT1430 / 1017
| 型号： | PAC27A03 |
| 厂家： | 
CALIFORNIA MICRO DEVICES CORP |
| 描述： | P/ACTIVE PRECISION VOLTAGE DIVIDER NETWORK FOR LINEAR TECHNOLOGY LT1430/1017 |
| 文件： | 总2页 (文件大小：127K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CALIFORNIA MICRO DEVICES
PAC 27A03
P/ACTIVE PRECISION VOLTAGE DIVIDER
NETWORK FOR LINEAR TECHNOLOGY LT1430/1017
Features
Applications
Provides a complete Pentium Pro regulator
solution when combined with a Linear Technology
LTC1430/LT1017 Power Supply Regulator Chip
Thin film tightly ratio matched resistors
using P/Active technology
Pentium Pro Power Supply Regulator
Refer to AP-202 Voltage Divider Application Note for
further information.
SOIC and QSOP Package
Product Description
CMDs P/Active 27A03 Precision Voltage Divider Network is designed to work with the Linear Technology LTC1430 High
Power Step-down Switching Regulator Controller. CMDs P/Active technology provides precision ratio tracking over tem-
perature range required for the proper voltage regulation in Pentium Pro-based regulator designs.
STANDARD SPECIFICATIONS
SCHEMATIC CONFIGURATION
16
Absolute Tolerance (R) ±5%
Ratio Tracking (0oC ≤ TA ≤ 70oC)
6
7
R10
(Voltage per resistor <10 volts and power
per resistor <25mW)
R9 R8 R7 R6 R2
R1
R13
5
15
14
R11/R12
R1/R6
±0.25%
±0.25%
R11
R12
11 10
9
8
12
R3
R1/R7
R1/R8
±0.5%
±1.0%
13
4
3
R14
R4
R5
R1/R9
±2.0%
±0.25%
±0.5%
±0.5%
2
1
R1/(R2+R3+R4+R5)
(R3+R4+R5)/(R1+R2)
(R4+R5)/(R1+R2+R3)
R5/(R1+R2+R3+R4)
Operating Temperature Range
Power Rating/Resistor
Storage Temperature
Package Power Rating
R15
±0.5%
0oC to 70oC
25mW @ 70oC
-65OC to +150OC
1.00W, max.
STANDARD VALUES
Resistor (R)
R1
Value (Ohms)
17600
14219
2381
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
833
12858
27770
55600
111260
222580
1000
33000
33000
47000
47000
47000
© 1993, 1996 CMD Corp. All rights reserved.
8/96
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
PAC 27A03
CALIFORNIA MICRO DEVICES
ORDERING INFORMATION
Ordering Part Number
Package
Pins
Style
SOIC Narrow
QSOP
Tubes
Tape & Reel
PAC27A03S/R
PAC27A03Q/R
Part Marking
PAC27A03
PAC27A03
16
16
PAC27A03S/T
PAC27A03Q/T
Application Diagram
LT 1017
5
7
6
SENS
+
SENS
VTRIM
+
POWER
GOOD
LT 1430
+
+5V
PAC 27A03
1
2
3
4
5
6
16
1.2V
REFERENCE
15
14
13
12
11
10
9
LT 1004
10.7K
5.76K
Vcc SENSE
10
680pF
7
8
VOLTAGE
SELECTS
+
MSB
TO OVER
VOLTAGE
CIRCUITRY
LSB
74AC125
LT 1430/LT 1017
©1993, 1996 CMD Corp. All rights reserved.
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
8/96
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