MC34653EF Freescale Semiconductor, MC34653EF Datasheet - Page 13

• Manufacturer Part Number: MC34653EF
• Description: IC CTRLR HOT SWAP NEG V 8-SOIC
• Manufacturer: Freescale Semiconductor
• Type: Hot-Swap Switchr

Specifications of MC34653EF

• Applications: General Purpose
• Internal Switch(s): Yes
• Current Limit: 1A
• Voltage - Supply: 36 V ~ 80 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

different modes of operation.
Analog Integrated Circuit Device Data
Freescale Semiconductor
Figure 13
V
V
Filter = 1.0 ms
Temp > 160°C
Filter = 1.0 ms
PWR
PWR
Filter = 12 μs
< V
> V
is a representation of the 34653 behavior in
OV(OFF)
UV(OFF)
MOSFET → OFF
MOSFET → OFF
MOSFET → OFF
Undervoltage
Overvoltage
Shutdown
Thermal
PG = 0
PG = 0
PG = 0
V
Filter = 1.0 ms
PWR
V
V
Filter = 1.0 ms
Filter = 1.0 ms
PWR
PWR
Temp < 135°C
Filter = 12 μs
> V
< V
< V
UV(ON)
UVLOF
OV(ON)
POR is generated
V
Filter = 1.0 ms
MOSFET → OFF
• Thermal Shutdown < 160°C
PWR
Power Off
A signal “set” is generated to check
PG = 0
Start-Up Conditions
resistors on UV, ILIM, ICHG, and
N = 0
> V
• V
• V
TIMER pins and 128 μs later
• DISABLE = 0
Filter = t
PWR
PWR
UVLOR
N = N + 1
Ext. Resistor Check
Figure 13. State Diagram
the OV pin
< V
> V
STATE MACHINE
TIMER
OV(OFF)
UV(OFF)
N > 10
POR is generated
MOSFET → OFF
DISABLE = 0
Filter = 1.0 ms
DISABLE
PG = 0
N = 0
N ≤ 10
Toggle DISABLE
or cycle Power Off
then On to clear fault
Retry Fault
STOP
Charging Mode
Filter = 1.0 ms
DISABLE = 1
Normal Operation
Pass PG
Check
Fail PG
Check
V
PG = 1
N = 0
DS
< 500 mV
FUNCTIONAL DEVICE OPERATION
I
LOAD
and V
I
LOAD
Fast Gate Discharge
If I
Good Check
> I
I
for 20 ms
LOAD
LOAD
for 100 μs
Short Circuit
SHORT
Power
DS
< I
Detection
< 10 μs
< 500 mV
LIM
< I
> I
OPERATIONAL MODES
MOSFET → OFF
LIM
LIM
- I
LIMHY
Overcurrent Mode
Overcurrent
for > 3.0 ms
Turn Off
PG = 0
Filter = 3.0 ms
34653
13