LTC4255CG#TRPBF Linear Technology, LTC4255CG#TRPBF Datasheet - Page 15

• Manufacturer Part Number: LTC4255CG#TRPBF
• Description: IC NETWORK POWER CTRLR 28SSOP
• Manufacturer: Linear Technology

Specifications of LTC4255CG#TRPBF

• Applications: Network Power Controller
• Voltage - Supply: 10.8 V ~ 13.2 V
• Current - Supply: 10mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -

PACKAGE DESCRIPTIO
APPLICATIO S I FOR ATIO
Relay Drivers
The four relay drivers have an open collector NPN
transistor with the ability to sink 50mA to within 0.3V of
DGND (Figure 13).
7.8 – 8.2
0.42 0.03
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
**
(.0035 – .010)
*
0.09 – 0.25
DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED .152mm (.006") PER SIDE
DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE
U
RECOMMENDED SOLDER PAD LAYOUT
U
(.197 – .221)
5.00 – 5.60**
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
(.022 – .037)
MILLIMETERS
0.55 – 0.95
(INCHES)
W
U
CIRCUITRY
Figure 13. Relay Driver Output
(Reference LTC DWG # 05-08-1640)
28-Lead Plastic SSOP (5.3mm)
DRIVE
U
1.25 0.12
5.3 – 5.7
0 – 8
0.65 BSC
G Package
(.0256)
DGND
0.65
BSC
An 18V Zener diode connected to DGND is provided to
protect against the inductive kickback of the coil when the
NPN transistor is turned off.
18V
28
1 2 3 4 5 6 7 8 9 10 11 12
3V TO 12V
(.009 – .015)
27
0.22 – 0.38
26
RELAY
25
4255 F13
24
9.90 – 10.50*
(.390 – .413)
23
22 21 20 19 18 17 16 15
13
14
G28 SSOP 0802
(.002)
0.05
(.079)
2.0
(.291 – .323)
7.40 – 8.20
LTC4255
15
4255f