LTC1646
W W U W
U
W
U
ABSOLUTE AXI U RATI GS
(Note 1)
PACKAGE/ORDER I FOR ATIO
TOP VIEW
Supply Voltages: 5VIN, 3VIN............................................... 10V
Input Voltages: (Pins 15, 16) .....................–0.3V to 10V
Output Voltages: (Pins 1, 3, 4) ..................–0.3V to 10V
Analog Voltages and Currents:
(Pin 9) .................................... –0.3V to (3VIN + 0.3V)
(Pins 2, 5, 7, 11, 13, 14) ........ –0.3V to (5VIN + 0.3V)
(Pin 10) .......................................................... ±20mA
Operating Temperature Range:
RESETOUT
TIMER
1
2
3
4
5
6
7
8
16 RESETIN
15 OFF/ON
FAULT
14
13
12
11
10
9
DRIVE
PWRGD
PRECHARGE
5V
5V
IN
OUT
GND
5V
SENSE
3V
GATE
3V
OUT
3V
IN
SENSE
LTC1646C ............................................... 0°C to 70°C
LTC1646I.............................................–40°C to 85°C
Storage Temperature Range ..................–65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 135°C/W
ORDER PART NUMBER
GN PART MARKING
LTC1646CGN
LTC1646IGN
1646
1646I
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T = 25°C. V
= 5V and V
= 3.3V unless otherwise noted.
A
5VIN
3VIN
SYMBOL PARAMETER
Supply Current
CONDITIONS
MIN
TYP
MAX
UNITS
I
V
OFF/ON = 0V
●
1.5
4
mA
DD
5VIN
V
Undervoltage Lockout
5V
3V
●
●
2.3
2.3
2.50
2.55
2.7
2.7
V
V
LKO
IN
IN
V
Foldback Current Limit Voltage
V
V
V
V
= (V
– V
– V
– V
– V
), V
), V
), V
), V
= 0V, TIMER = 0V
= 4V, TIMER = 0V
= 0V, TIMER = 0V
= 2V, TIMER = 0V
●
●
●
●
15
50
15
50
20
55
20
55
30
65
30
65
mV
mV
mV
mV
FB
FB
FB
FB
FB
5VIN
5VIN
3VIN
3VIN
5VSENSE
5VSENSE
3VSENSE
3VSENSE
5VOUT
5VOUT
3VOUT
3VOUT
= (V
= (V
= (V
V
Circuit Breaker Trip Voltage
V
V
= (V
= (V
– V
– V
), V
), V
= 5V, TIMER Open
= 3.3V, TIMER Open
●
●
50
50
56
56
65
65
mV
mV
CB
OC
SS
CP
CB
CB
5VIN
3VIN
5VSENSE
3VSENSE
5VOUT
3VOUT
t
t
I
Overcurrent Fault Response Time
(V
(V
– V
– V
) = 100mV, TIMER Open
) = 100mV, TIMER Open
●
●
10
10
21
21
30
30
µs
µs
5VIN
3VIN
5VSENSE
3VSENSE
Short-Circuit Fault Response Time (V
(V
– V
– V
) = 200mV, TIMER Open
) = 200mV, TIMER Open
●
●
0.145
0.145
1
1
µs
µs
5VIN
3VIN
5VSENSE
3VSENSE
GATE Pin Output Current
OFF/ON = 0V, V
OFF/ON = 5V, V
OFF/ON = 0V, V
= 0V, TIMER = 0V
= 5V, TIMER = 0V
= 5V, FAULT = 0V, TIMER Open
●
–18
80
4
–13
200
7
–8
300
12
µA
µA
mA
GATE
GATE
GATE
●
V
V
External Gate Voltage
(GATE to GND)
OFF/ON = 0V, I
OFF/ON = 0V, V
= –1µA
= 3.3V, I
●
●
12
11
15
13
16
15
V
V
GATE
TH
GATE
= –1µA
5VIN
GATE
Power Good Threshold Voltage
3V
5V
●
●
2.8
4.5
2.9
4.65
3.0
4.75
V
V
OUT
OUT
V
V
No 5V Input Mode Window Voltage
Input Low Voltage
V
= ⎪V
– V
⎪, V
= V = 3.3V
3VOUT
●
●
50
120
200
0.8
mV
V
3VONLY
IL
3VONLY
5VIN
3VIN
5VOUT
OFF/ON, RESETIN, FAULT
1646fa
2
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