Datasheet
LTC4215/LTC4215-2
3
4215fe
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
DD
= 12V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Supplies
V
DD
Input Supply Range
l
2.9 15 V
V
OV(VDD)
Input Supply Overvoltage Threshold
l
15 15.6 16.5 V
I
DD
Input Supply Current
l
35 mA
V
DD(UVL)
Input Supply Undervoltage Lockout V
DD
Rising
l
2.75 2.84 2.89 V
V
DD(HYST)
Input Supply Undervoltage Lockout Hysteresis
l
75 100 125 mV
INTV
CC
Internal Regulator Voltage V
DD
≥ 3.3V
l
2.9 3.1 3.4 V
INTV
CC(UVL)
INTV
CC
Undervoltage Lockout INTV
CC
Rising
l
2.55 2.64 2.79 V
INTV
CC(HYST)
INTV
CC
Undervoltage Lockout Hysteresis
l
20 55 75 mV
Current Limit and Circuit Breaker
ΔV
SENSE(TH)
Circuit Breaker Threshold (V
DD
– V
SENSE
)
l
22.5 25 27.5 mV
ΔV
SENSE
Current Limit Voltage (V
DD
– V
SENSE
)V
FB
= 1.3V
V
FB
= 0V
Start-Up Timer Expired
l
l
l
22
6.5
65
25
10
75
29
13
90
mV
mV
mV
t
D(OC)
OC Fault Filter
ΔV
SENSE
= 50mV, LTC4215
ΔV
SENSE
= 50mV, LTC4215-2
l
l
15
300
20
420
30
600
µs
µs
I
SENSE(IN)
SENSE +/– Input Current
V
SENSE
= 12V
l
10 20 35 µA
Gate Drive
ΔV
GATE
External N-Channel Gate Drive (V
GATE
– V
SOURCE
)
(Note 3)
V
DD
= 2.9V to 15V
l
4.7 5.9 6.5 V
I
GATE(UP)
External N-Channel Gate Pull-Up Current Gate On, V
GATE
= 0V
l
–15 –20 –30 µA
I
GATE(DN)SLOW
External N-Channel Gate Pulldown Current Gate Off, V
GATE
= 15V
l
0.8 1 1.6 mA
I
GATE(DN)FAST
Pulldown Current From GATE to SOURCE
During OC/UVLO
V
DD
– SENSE = 100mV, V
GS
= 4V
l
300 450 700 mA
t
PHL(SENSE)
(V
DD
– SENSE) High to GATE Low V
DD
– SENSE = 100mV, C
GS
= 10nF
l
0.5 1 µs
V
GS(POWERBAD)
Gate-Source Voltage for Power Bad Fault V
SOURCE
= 2.9V – 15V
l
3.8 4.3 4.7 V
ORDER INFORMATION
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4215CGN LTC4215CGN#TR 4215 16-Lead Plastic TSSOP 0°C to 70°C
LTC4215IGN LTC4215IGN#TR 4215I 16-Lead Plastic TSSOP –40°C to 85°C
LTC4215CUFD LTC4215CUFD#TR 4215
24-Lead (4mm × 5mm) Plastic QFN
0°C to 70°C
LTC4215IUFD LTC4215IUFD#TR 4215
24-Lead (4mm × 5mm) Plastic QFN
–40°C to 85°C
LTC4215CUFD-2 LTC4215CUFD-2#TR 42152
24-Lead (4mm × 5mm) Plastic QFN
0°C to 70°C
LTC4215IUFD-2 LTC4215IUFD-2#TR 42152
24-Lead (4mm × 5mm) Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to:
http://www.linear.com/tapeandreel/