LTC4255CG#TRPBF Linear Technology, LTC4255CG#TRPBF Datasheet - Page 7

• 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: -

REGISTER DEFI ITIO S
Register 1: Control Register ( Write Only)
A0: Switch 1 Enable. Logic high turns on Port 1 switch,
logic low turns off the Port 1 switch.
A1: Switch 2 Enable. Logic high turns on Port 2 switch,
logic low turns off Port 2 switch.
A2: Switch 3 Enable. Logic high turns on Port 3 switch,
logic low turns off Port 3 switch.
A3: Switch 4 Enable. Logic high turns on Port 4 switch,
logic low turns off Port 4 switch.
A4: Relay 1 Enable. Logic high turns on Port 1 relay, logic
low turns off Port 1 relay.
A5: Relay 2 Enable. Logic high turns on Port 2 relay, logic
low turns off Port 2 relay.
A6: Relay 3 Enable. Logic high turns on Port 3 relay, logic
low turns off Port 3 relay.
A7: Relay 4 Enable. Logic high turns on Port 4 relay, logic
low turns off Port 4 relay.
The default setting is all bits set low.
Register 2: Setup Register (Write Only)
B0: Fault Clear Bit. Logic high clears any fault bits that are
set.
B1: Autoretry Enable Bit. Logic high enables autoretry
following short-circuit faults. Logic low disables autoretry.
B2: Open-Circuit Detect Enable Bit. Logic high enables and
logic low disables open-circuit fault detection.
B3: Retry Duty Cycle Select Bit. Logic high sets the
autoretry duty cycle to 6%. Logic low sets the autoretry
duty cycle to 0.83%. When autoretry is not enabled (B1 =
low), the switch turn-on after A0 to A3 are set to high will
be delayed to enforce the selected retry duty cycle.
U
U
B4: Current Limit Timer Select Bit 0. The current limit
timer select bits configure t
be sustained before a short-circuit fault occurs. (See t
AC Characteristics.)
B5: Current Limit Timer Select Bit 1. The current limit
timer select bits configure t
be sustained before a short-circuit fault occurs. (See t
AC Characteristics.)
B6: Open-Circuit Enable Delay Timer Select Bit 0. The
open-circuit enable delay timer select bits configure t
the time following a Power_OK condition when no open-
circuit faults will be generated. ( See t
teristics.)
B7: Open-Circuit Enable Delay Timer Select Bit 1. The
open-circuit enable delay timer select bits configure t
the time following a Power_OK condition when no open-
circuit faults will be generated. ( See t
teristics.)
The default setting is all bits set low.
Register 3: Status Register 1 (Read Only)
C0: Power_OK for Port 1. Logic high indicates switch 1
is on.
C1: Power_OK for Port 2. Logic high indicates switch 2
is on.
C2: Power_OK for Port 3. Logic high indicates switch 3
is on.
C3: Power_OK for Port 4. Logic high indicates switch 4
is on.
C4: Reserved. Logic high.
C5: Reserved. Logic low.
C6: Reserved. Logic low.
C7: Reserved. Logic low.
CL
CL
, the time a current limit must
, the time a current limit must
OCD
OCD
LTC4255
, in AC Charac-
, in AC Charac-
CL
CL
OCD
OCD
7
4255f
in
in
,
,