LTC4210 -1/LTC4210 -2
3
421012fa
For more information www.linear.com/LTC4210-1
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 3: An internal Zener on the GATE pin clamps the charge pump
voltage to a typical maximum voltage of 26V. External overdrive of the
GATE pin beyond the internal Zener voltage may damage the device.
Without a limiting resistor, the GATE capacitance must be <0.15µF at
maximum V
CC
. If a lower GATE pin clamp voltage is desired, an external
Zener diode may be used.
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage
l
2.7 16.5 V
I
CC
V
CC
Supply Current
l
0.65 3.5 mA
V
LKOR
V
CC
Undervoltage Lockout Release V
CC
Rising
l
2.2 2.5 2.65 V
V
LKOHYST
V
CC
Undervoltage Lockout Hysteresis 100 mV
I
INON
ON Pin Input Current
l
–10 0 10 µA
I
INSENSE
SENSE Pin Input Current V
SENSE
= V
CC
l
–10 5 10 µA
V
CB
Circuit Breaker Trip Voltage V
CB
= (V
CC
– V
SENSE
)
l
44 50 56 mV
I
GATEUP
GATE Pin Pull-Up Current V
GATE
= 0V
l
–5 –10 –15 µA
I
GATEDN
GATE Pin Pull-Down Current V
TIMER
= 1.5V, V
GATE
= 3V or
V
ON
= 0V, V
GATE
= 3V or
V
CC
– V
SENSE
= 100mV, V
GATE
= 3V
25 mA
∆V
GATE
External N-Channel Gate Drive V
GATE
– V
CC
, V
CC
= 2.7V
V
GATE
– V
CC
, V
CC
= 3V
V
GATE
– V
CC
, V
CC
= 3.3V
V
GATE
– V
CC
, V
CC
= 5V
V
GATE
– V
CC
, V
CC
= 12V
V
GATE
– V
CC
, V
CC
= 15V
l
l
l
l
l
l
4.0
4.5
5.0
10
9.0
6.0
6.5
7.5
8.5
12
12
11
8
10
12
16
16
18
V
V
V
V
V
V
I
TIMERUP
TIMER Pin Pull-Up Current Initial Cycle, V
TIMER
= 1V
During Current Fault Condition, V
TIMER
= 1V
l
l
–2
–25
–5
–60
–8.5
–100
µA
µA
I
TIMERDN
TIMER Pin Pull-Down Current After Current Fault Disappears, V
TIMER
= 1V
Under Normal Conditions, V
TIMER
= 1V
l
2
100
3.5 µA
µA
V
TIMER
TIMER Pin Threshold High Threshold, TIMER Rising
Low Threshold, TIMER Falling
l
l
1.22
0.15
1.3
0.2
1.38
0.25
V
V
V
TMRHYST
TIMER Low Threshold Hysteresis 100 mV
V
ON
ON Pin Threshold ON Threshold, ON Rising
l
1.22 1.3 1.38 V
V
ONHYST
ON Pin Threshold Hysteresis 80 mV
t
OFF(TMRHIGH)
Turn-Off Time (TIMER Rise to GATE Fall) V
TIMER
= 0V to 2V Step, V
CC
= V
ON
= 5V 1 µs
t
OFF(ONLOW)
Turn-Off Time (ON Fall to GATE Fall) V
ON
= 5V to 0V Step, V
CC
= 5V 30 µs
t
OFF(VCCLOW)
Turn-Off Time (V
CC
Fall to IC Reset) V
CC
= 5V to 2V Step, V
ON
= 5V 30 µs
