LTC2953
ABSOLUTE MAXIMUM RATINGS
PIN CONFIGURATION
(Note 1)
TOP VIEW
Supply Voltage (V ) .................................. –0.3V to 33V
IN
1
2
3
4
5
6
12 INT
GND
Input Voltages
EN/EN
V
M
11
10
9
⎯
⎯
⎯
⎯
⎯
PB, PFI, UVLO........................................... –6V to 33V
Vꢁ......................................................... –0.3V to 20V
KILL....................................................... –0.3V to 10V
PDT....................................................... –0.3V to 2.7V
Output Voltages
EN/EN, PFO............................................ –0.3V to 50V
RST, INT ................................................ –0.3V to 10V
Operating Temperature Range
RST
PFO
PFI
KILL
PDT
PB
13
8
⎯
⎯
⎯
⎯
7
UVLO
V
IN
DD PACKAGE
12-LEAD (3mm 3mm) PLASTIC DFN
T
= 125°C, θ = 43°C/W
JA
⎯ ⎯ ⎯ ⎯ ⎯
⎯ ⎯ ⎯ ⎯ ⎯ ⎯
JꢁAX
EXPOSED PAD (PIN 13) PCB GROUND CONNECTION OPTIONAL
LTC2953C ................................................ 0°C to 70°C
LTC2953I ............................................. –40°C to 85°C
Storage Temperature Range................... –65°C to 125°C
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
12-Lead (3mm × 3mm) Plastic DFN
12-Lead (3mm × 3mm) Plastic DFN
12-Lead (3mm × 3mm) Plastic DFN
12-Lead (3mm × 3mm) Plastic DFN
TEMPERATURE RANGE
0°C to 70°C
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
LTC2953CDD-1#PBF
LTC2953CDD-2#PBF
LTC2953IDD-1#PBF
LTC2953IDD-2#PBF
LTC2953CDD-1#TRPBF
LTC2953CDD-2#TRPBF
LTC2953IDD-1#TRPBF
LTC2953IDD-2#TRPBF
LCWT
LCQT
LCWT
LCQT
Consult LTC ꢁarketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC ꢁarketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 2.7V to 27V, unless otherwise noted (Note 2).
SYMBOL
Supply Pin (V )
PARAMETER
CONDITIONS
MIN
2.7
2.2
–1
TYP
MAX
UNITS
IN
●
●
●
V
IN
Supply Voltage Range
Steady State Operation
27
26
V
μA
V
I
IN
V
V
Supply Current
V
IN
V
IN
= 2.7V to 27V
Falling
14
IN
IN
V
Undervoltage Lockout
2.3
2.5
UVL
⎯
⎯
⎯
⎯
Push Button, Enable (PB, EN/EN)
⎯
⎯
●
V
PB Operating Voltage Range
Single-Ended
2.5V < V < 27V
27
V
PB(ꢁIN, ꢁAX)
⎯
⎯
●
●
●
I
PB Input Current
1
–12
–15
μA
μA
μA
PB
PB
V
V
= 1V
= 0.6V
–1
–3
–6
–9
PB
PB
⎯
⎯
⎯
⎯
●
●
V
V
PB Input Threshold
PB Falling
0.6
1
0.8
1.6
1
2
V
V
PB(VTH)
PB(VOC)
⎯
⎯
PB Open Circuit Voltage
I
= –1μA
PB
2953f
2