lm5066pmhx National Semiconductor Corporation, lm5066pmhx Datasheet - Page 5

• Manufacturer Part Number: lm5066pmhx
• Description: High Voltage System Power Management And Protection Ic With Pmbus
• Manufacturer: National Semiconductor Corporation

Power Limit (PWR Pin)
Gate Control (GATE Pin)
OUT Pin
Current Limit
Circuit Breaker
Timer (TIMER pin)
Internal Reference
t
FAULT_DELAY
R
DC
Symbol
V
PWR
I
V
I
SAT(PWR)
I
V
OUT-DIS
V
OUT-EN
I
RT
I
GATECP
SENSE
V
I
TIMER
GATE
GATEZ
V
V
PWR
TMRH
t
t
TMRL
FAULT
CL
CB
REF
CL
CB
CB
LIM
Power limit sense voltage (VIN-
SENSE)
PWR pin current
PWR pin impedance when disabled
Source current
Fault Sink current
POR Circuit Breaker sink current
Reverse-bias voltage of GATE to OUT
zener diode
Peak charge pump voltage in normal
operation (V
OUT bias current, enabled
OUT bias current, disabled
Current limit threshold voltage (V
V
Response time
SENSE input current
Circuit Breaker to Current Limit Ratio:
(V
Circuit Breaker Threshold Voltage:
(V
Response time
Upper threshold
Lower threshold
Insertion time current
Sink current, end of insertion time
Fault detection current
Fault sink current
Fault Restart Duty Cycle
Fault to GATE low delay
Reference Voltage
SENSE
IN
IN
-V
- V
SENSE
)
SENSE
IN
)
CB
)
Parameter
= V
/V
CL
OUT
)
(Note
IN
4)
-
SENSE-OUT = 48V, R
SENSE-OUT = 24V, R
V
UVLO = 2V
Normal Operation
UVLO = 2V
VIN - SENSE = 150 mV or VIN <
POR
GATE - OUT
GATE - OUT
OUT = VIN, Normal operation
Disabled, OUT = 0V, SENSE = VIN
CL = VDD
CL = GND
VIN-SENSE stepped from 0 mV to 80
mV
Enabled, SENSE = OUT
Disabled, OUT = 0V
Enabled, OUT = 0V
CB/CL ratio bit = 0, ILim = 50 mV
CB/CL ratio bit = 1, ILim = 50 mV
CB/CL ratio bit = 0, ILim = 26 mV
CB/CL ratio bit = 1, ILim = 26 mV
CB/CL ratio bit = 0, ILim = 50 mV
CB/CL ratio bit = 1, ILim = 50 mV
CB/CL ratio bit = 0, ILim = 26 mV
CB/CL ratio bit = 1, ILim = 26 mV
VIN - SENSE stepped from 0 mV to
150 mV, time to GATE low, no load
Restart cycles
End of 8
Re-enable Threshold
TIMER pin = 2V
TIMER pin reaches the upper
threshold
PWR
IT
= 2.5V
, V
5
th
GATE
cycle
Conditions
= 5V
PWR
PWR
= 121 kΩ
= 75 kΩ
16.5
1.64
3.28
3.74
0.98
2.93
Min
164
-5.9
-26
3.4
1.0
-95
1.7
50
15
23
47
80
39
79
19.5
16.5
13.6
1.94
3.87
1.88
3.75
0.42
2.97
Typ
135
115
220
193
-4.8
-20
-20
4.2
-50
3.9
1.1
0.3
0.3
1.5
-75
2.5
0.5
23
78
26
50
45
25
66
96
48
96
12
Max
22.5
2.23
4.45
0.83
4.07
1.24
3.02
180
110
222
113
-3.3
-10
5.3
2.0
-50
3.2
18
29
53
57
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Units
V/V
mV
mV
mA
mA
mV
mV
mA
µA
µA
µA
µA
µA
µA
µA
µA
µs
µs
µs
%
Ω
V
V
V
V
V
V
V