MAX4273ESE+ Maxim Integrated Products, MAX4273ESE+ Datasheet - Page 9

• Manufacturer Part Number: MAX4273ESE+
• Description: IC CNTRLR HOT SWAP 16-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Hot-Swap Controllerr

Specifications of MAX4273ESE+

• Applications: General Purpose
• Internal Switch(s): No
• Voltage - Supply: 2.7 V ~ 13.2 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(
with Autoretry, DualSpeed/BiLevel Fault Protection
V
IN
MAX4271
MAX4272
= 5V, R
—
—
—
—
—
3V to 12V Current-Limiting Hot-Swap Controllers
1
2
3
4
5
SENSE
C
C
BOARD
TIM
MAX4273
= 100mΩ, C
= 10nF, C
PIN
STARTUP TIME (C
= 0, R
_______________________________________________________________________________________
10
1
2
3
4
5
6
7
8
9
SENSE
GATE
100μs/div
= 0
= 100mΩ,
BOARD
AUXVCC
LLMON
SENSE
NAME
CTON
CSPD
GATE
CEXT
GND
RTH
BOARD
IN
= 47µF, T
= 0)
MAX4271/3-35
Current-Sense Threshold Setting Input. Connect a resistor from RTH to V
fast comparator threshold. Bypass to V
both the fast comparator and current regulation at startup. Short RTH to GND for a
200mV threshold. See Fast Comparator Threshold section.
Auxiliary Supply Input. Supply input for short-circuit switchover. To use this, connect a
1μF capacitor from AUXVCC to GND; otherwise, leave floating. See Auxiliary V
section.
Input Voltage. Connect to +2.7V to +13.2V supply; 15V absolute maximum voltage
rating.
Current-Sense Resistor Voltage Input. R
Gate Drive Output. Connect to gate of external N-channel pass transistor.
External Gate Capacitance Connection. Connect a capacitor from CEXT to GATE to
increase the gate charging time. This pin goes high impedance during a fast
comparator fault for fast discharge.
Load Line Monitor. Connect to the source of the external N-channel MOSFET. The
external FET is turned on only when the load voltage is less than 100mV.
Ground
Startup Timer Input. Leave floating or connect the timing capacitor from CTON to GND.
See Startup and Retry Timers section.
Slow Comparator Speed Setting. Leave floating or connect the timing capacitor from
CSPD to GND. See Slow Comparator Response Time section.
A
Typical Operating Characteristics (continued)
ON
V
2V/div
V
2V/div
= +25°C, unless otherwise noted.
GATE
OUT
2V/div
2V/div
V
V
GATE
OUT
0
FUNCTION
)
IN
C
C
SENSE
BOARD
GATE
with 0.1μF. Connect RTH to V
TURN-OFF TIME (C
= 0, R
= 0, R
is connected from IN to SENSE.
S
SENSE
= 0
= 100mΩ,
50μs/div
BOARD
Pin Description
= 0)
MAX4271/3-37
IN
IN
ON
I
1A/div
0
to disable
LOAD
to set the
CC
9