LTC4253ACGN#PBF Linear Technology, LTC4253ACGN#PBF Datasheet - Page 32

• Manufacturer Part Number: LTC4253ACGN#PBF
• Description: IC HOT SWAP CONTRLR -48V 16-SSOP
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LTC4253ACGN#PBF

• Applications: General Purpose
• Internal Switch(s): No
• Voltage - Supply: 8.2 V ~ 14.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP (0.150", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LTC4253/LTC4253A
applicaTions inForMaTion
The peak power at the fault current limit occurs at the supply
overvoltage threshold. The fault current limited power is:
package DescripTion
32
POWER(FAULT) =
(
V
SUPPLY
R
S
)
(0.178 – 0.249)
.007 – .0098
• V



NOTE:
1. CONTROLLING DIMENSION: INCHES
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
* DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
ACL
.254 MIN
.0165 ±.0015
RECOMMENDED SOLDER PAD LAYOUT
− (V
SUPPLY
(0.406 – 1.270)
.016 – .050
(MILLIMETERS)
INCHES
− V
Z
) •
16-Lead Plastic SSOP (Narrow .150 Inch)
.150 – .165
.045 ±.005
R4
R3
0° – 8° TYP
(0.38 ±0.10)
.015 ±.004
.0250 BSC
(Reference LTC DWG # 05-08-1641)



(18)
× 45°
GN Package
(5.817 – 6.198)
(0.203 – 0.305)
Circuit Breaker with Foldback Current Limit
Figure 17 shows the LTC4253A in a foldback current limit
application. When V
current flows through resistors R3 and R4. This results in
a voltage drop across R4 and a corresponding reduction
in voltage drop across the sense resistor, R
amplifier servos the sense voltage between the SENSE and
V
RS reduces as the V
short-circuit condition. Without foldback current limiting
resistor R4, the current is limited to 3A during analog
current limit. With R4, the short-circuit current is limited
to 0.5A when V
.229 – .244
.008 – .012
EE
TYP
pins to about 60mV. The short-circuit current through
.0532 – .0688
(1.35 – 1.75)
16 15 14 13
1
OUT
2 3
(4.801 – 4.978)
.189 – .196*
OUT
OUT
is shorted to 71V.
4
12 11 10 9
voltage increases during an output
5 6 7
is shorted to the –48V RTN supply,
(0.635)
.0250
BSC
(0.102 – 0.249)
8
.004 – .0098
(3.810 – 3.988)
.150 – .157**
GN16 (SSOP) 0204
(0.229)
.009
REF
S
, as the ACL
425353afd