ltc1427cs8-50-trpbf Linear Technology Corporation, ltc1427cs8-50-trpbf Datasheet - Page 8

• Manufacturer Part Number: ltc1427cs8-50-trpbf
• Description: Micropower, 10-bit Current Output Dac With Smbus Serial Interface
• Manufacturer: Linear Technology Corporation

3.3V
LTC1427-50
PACKAGE
RELATED PARTS
PART NUMBER
LTC1329-10/LTC1329-50
LTC1380/LTC1393
LTC1426
LTC1428
LTC1623
8
TYPICAL APPLICATIONS
V
0.1 F
CC
C6
(0.203 – 0.254)
**
0.008 – 0.010
*
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
SHDN
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417 [phone]
FAX: [phone] TELEX: 499-3977 www.linear-tech.com
(0.254 – 0.508)
ALUMINUM ELECTROLYTIC IS RECOMMENDED FOR C3B WITH AN
ESR 0.5 TO PREVENT DAMAGE TO THE LT1184F HIGH-SIDE
SENSE RESISTOR DUE TO SURGE CURRENTS AT TURN-ON.
C1 MUST BE A LOW LOSS CAPACITOR, C1 = WIMA MKP-20
Q1, Q2 = ZETEX ZTX849 OR ROHM 2SC5001
L1 = COILTRONICS CTX210605
L2 = COILTRONICS CTX100-4
*DO NOT SUBSTITUTE COMPONENTS
COILTRONICS [phone]
0 A TO 50 A I
0mA TO 6mA LAMP CURRENT FOR A
TYPICAL DISPLAY.
0.010 – 0.020
DESCRIPTION
0.016 – 0.050
0.406 – 1.270
1
2
3
4
CCFL
SHDN
AD1
AD0
GND
DESCRIPTION
Micropower 8-Bit Current Source DAC
SMBus Single-Ended 8-Channel/Differential
4-Channel Multiplexers
Micropower Dual 6-Bit PWM DAC
Micropower 8-Bit Current Sink DAC
SMBus Dual High Side Switch Controller
45
LTC1427-50
CURRENT GIVES
I
SDA
SCL
V
OUT
CC
0 – 8 TYP
8
7
6
5
U
TO
SMBUS
HOST
U
SMBus-Controlled Floating CCFL Power Supply
8-Lead Plastic Small Outline (Narrow 0.150)
(1.346 – 1.752)
0.053 – 0.069
(0.355 – 0.483)
0.014 – 0.019
Dimensions in inches (millimeters) unless otherwise noted.
(LTC DWG # 05-08-1610)
C7, 1 F
BAT85
D5
S8 Package
1
2
3
4
5
6
7
8
I
DIO
CCFL V
AGND
SHDN
NC
CCFL
PGND
NC
CCFL
COMMENTS
1-Wire, 2-Wire or Standard 3-Wire SPI Control
Single 2.7V to 5V Supply, Low Power
Pulse Mode and Push-Button Mode Interface
1-Wire, 2-Wire or Standard 3-Wire SPI Control
Regulated Onboard Charge Pump Drives External N-Channel MOSFETs
C5
1000pF
LT1184F
C
(1.270)
0.050
TYP
(0.101 – 0.254)
CCFL V
0.004 – 0.010
ROYER
R3
100k
BULB
R2
220k
BAT
REF
V
SW
NC
NC
IN
16
15
14
13
12
11
10
9
Q2*
(5.791 – 6.197)
3
0.228 – 0.244
10
UP TO 6mA
LAMP
+
0.1 F
C1*
2
L2
100 H
C3B
2.2 F
35V
6
Q1*
1
C2
27pF
3kV
8
1
1N5818
4
D1
(4.801 – 5.004)
0.189 – 0.197*
7
2
LINEAR TECHNOLOGY CORPORATION 1998
142750f LT/TP 0398 4K • PRINTED IN USA
5
L1
6
3
R1
750
5
4
+
(3.810 – 3.988)
+
0.150 – 0.157**
C4
2.2 F
C3A
2.2 F
35V
SO8 0996
V
3.3V
BAT
8V TO 28V
IN
1427 TA01