Datasheet

LTC4216
3
4216fa
For more information www.linear.com/LTC4216
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 3.3V, unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ΔV
CB(TH)
Circuit Breaker Trip Voltage Threshold
(V
SENSEP
– V
SENSEN
)
V
SENSEP
= 0.4V, 3.3V
l
22.5
21.5
25
25
27.5
28.5
mV
mV
ΔV
ACL(TH)
Analog Current Limit Voltage Threshold
(V
SENSEP
– V
SENSEN
)
l
32 40 48 mV
I
SENSEP(IN)
SENSEP Pin Input Current V
SENSEP
= V
SENSEN
= V
CC
= 6V
V
SENSEP
= V
SENSEN
= 0V, V
CC
= 6V
l
l
20 70
–7
250
–20
µA
µA
I
SENSEN(IN)
SENSEN Pin Input Current V
SENSEN
= V
SENSEP
= V
CC
= 6V
V
SENSEN
= V
SENSEP
= 0V, V
CC
= 6V
l
l
–5
10
–10
15
–15
µA
µA
I
GATE(UP)
GATE Pull Up Current Gate Drive On, V
GATE
= 0V, V
ON
= 2V
l
–16 –20 –26 µA
I
GATE(DN)
GATE Pull Down Current Gate Drive Off, V
GATE
= 5V, V
ON
= 0.6V
V
SENSEP
- V
SENSEN
= 55mV, V
GATE
= 5V
V
SENSEP
- V
SENSEN
= 100mV, V
GATE
= 5V
l
l
l
100
1
15
600
5
50
1500
20
100
µA
mA
mA
ΔV
GATE
External N-Channel Gate Drive
(V
GATE
– V
SENSEN
)
2.3V ≤ V
CC
< 3V
3V ≤ V
CC
≤ 6V
l
l
4.0
4.5
5.0
6.2
7.9
7.9
V
V
V
GATE(TH)
GATE Pin Threshold Voltage V
GATE
Falling
l
0.15 0.2 0.3 V
V
SS(CLP)
SS Pin Clamp Voltage After End of SS Timing Cycle
l
1.3 1.65 2.0 V
V
SS(TH)
SS Pin Threshold Voltage V
SS
Falling
l
0.15 0.2 0.35 V
I
SS(UP)
SS Pull Up Current V
ON
= 2V, V
SS
= 1.2V, V
FB
= 2V
V
ON
= 2V, V
FB
= 0V
l
l
–7
–0.3
–10
–1
–13
–2
µA
µA
I
SS(DN)
SS Pull Down Current V
ON
= 0V, V
SS
= 2V 8 mA
V
FB(TH)
FB Pin Threshold Voltage V
FB
Falling
l
0.593 0.602 0.611 V
ΔV
FB(LINEREG)
FB Pin Threshold Line Regulation 2.3V ≤ V
CC
≤ 6V
l
0.2 3 mV
ΔV
FB(HYST)
FB Pin Hysteresis 3 mV
I
FB(IN)
FB Pin Input Current V
FB
= 1.2V, V
CC
= 6V
l
0 ±1 µA
V
ON(TH)
ON Pin Threshold Voltage V
ON
Rising
l
0.77 0.8 0.83 V
ΔV
ON(HYST)
ON Pin Hysteresis
l
40 80 130 mV
V
ON(FC)
ON Pin Fault Clear Threshold Voltage V
ON
Falling
l
0.36 0.4 0.44 V
I
ON(IN)
ON Pin Input Current V
ON
= 1.2V, V
CC
= 6V
l
0 ±1 µA
V
TMR(TH)
TIMER Pin Threshold Voltage V
TIMER
Rising
V
TIMER
Falling
l
l
1.216
0.15
1.253
0.2
1.291
0.35
V
V
I
TMR(UP)
Timer Pull Up Current Timer On, V
ON
= 2V, V
TIMER
= 1V
l
–1.5 –2 –2.5 µA
I
TMR(DN)
Timer Pull Down Current Timer Off, V
ON
= 0V, V
TIMER
= 2V 8 mA
V
FILT(TH)
FILTER Pin Threshold Voltage V
FILTER
Rising
V
FILTER
Falling
l
l
1.216
0.15
1.253
0.2
1.291
0.35
V
V
I
FILT(UP)
Filter Pull Up Current V
ON
= 2V, V
FILTER
= 1V, In Fault Mode
l
–45 –60 –75 µA
I
FILT(DN)
Filter Pull Down Current V
ON
= 2V, V
FILTER
= 1V, No Faults
V
ON
= 0V, V
FILTER
= 2V, In Reset Mode
l
1.5 2.4
8
3.3 µA
mA
V
FAULT(TH)
FAULT Pin Threshold Voltage V
FAULT
Falling
l
1.216 1.253 1.291 V
ΔV
FAULT(HYST)
FAULT Pin Hysteresis 10 mV
I
FAULT(UP)
FAULT Pin Current V
ON
= 0V, V
FAULT
= 1.5V
l
–3 –5 –7 µA
V
OL
Output Low Voltage (RESET, FAULT) I
RESET
= I
FAULT
= 1.6mA
l
0.15 0.4 V
I
RESET(LEAK)
RESET Pin Input Leakage Current V
RESET
= V
CC
= 6V 0 ±10 µA
t
CB(TRIP)
Circuit Breaker Trip to Gate Discharging (V
SENSEP
- V
SENSEN
) = Step 0V to 150mV
(V
SENSEP
- V
SENSEN
) = Step 0V to 30mV,
V
SENSEP
= V
CC
, FILTER = 10nF to GND
l
l
120
1
240
3
360
µs
µs