LTC2911
3
2911f
PRODUCT SELECTION GUIDE
PART NUMBER
PART MARKING
PACKAGE DESCRIPTION
V1
V2
LTC2911-1
LFHZ
8-Lead (3mm
× 2mm) Plastic DFN
3.3V
5V
LTC2911-2
LFPG
8-Lead (3mm
× 2mm) Plastic DFN
3.3V
2.5V
LTC2911-3
LFPJ
8-Lead (3mm
× 2mm) Plastic DFN
3.3V
1.8V
LTC2911-4
LFPM
8-Lead (3mm
× 2mm) Plastic DFN
3.3V
1.2V
LTC2911-5
LFPP
8-Lead (3mm
× 2mm) Plastic DFN
3.3V
ADJ
LTC2911-1
LTFJB
8-Lead Plastic TSOT-23
3.3V
5V
LTC2911-2
LTFPH
8-Lead Plastic TSOT-23
3.3V
2.5V
LTC2911-3
LTFPK
8-Lead Plastic TSOT-23
3.3V
1.8V
LTC2911-4
LTFPN
8-Lead Plastic TSOT-23
3.3V
1.2V
LTC2911-5
LTFPQ
8-Lead Plastic TSOT-23
3.3V
ADJ
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VRT33
3.3V, 5% Reset Threshold
V1 Input
l
3.036
3.086
3.135
V
VRT50
5V, 5% Reset Threshold
V2 Input (LTC2911-1)
l
4.600
4.675
4.750
V
VRT25
2.5V, 5% Reset Threshold
V2 Input (LTC2911-2)
l
2.300
2.338
2.375
V
VRT18
1.8V, 5% Reset Threshold
V2 Input (LTC2911-3)
l
1.656
1.683
1.710
V
VRT12
1.2V, 5% Reset Threshold
V2 Input (LTC2911-4)
l
1.104
1.122
1.140
V
VRTA
ADJ Pin Threshold
ADJ Input and V2 Input of
LTC2911-5
l
492.5
500
507.5
mV
VPFT
PFI Pin Threshold
PFI Input Threshold (Falling)
l
492.5
500
507.5
mV
VPFT
PFI Hysteresis
l
10
15
19
mV
VCC,OP
Minimum Operating Voltage to Guarantee PFO
High (Note 3)
VPFI = 0.55V
l
2.3
V
IV1
V1 input Current (Note 4)
V1 = 3.3V, V1 > V2
l
10
30
80
A
V1 = 3.3V, V1 < V2
l
3
10
30
A
IV2
V2 Input Current (Note 4)
V2 = 5V (LTC2911-1)
V2 = 2.5V (LTC2911-2)
V2 = 1.8V (LTC2911-3)
V2 = 1.2V (LTC2911-4)
V2 = 0.55V (LTC2911-5)
C-Grade/I-Grade
H-Grade
l
10
3
2
35
10
80
30
±15
±40
A
nA
IADJ
ADJ Input Current
VADJ = 0.55V (C-Grade) (I-Grade)
VADJ = 0.55V (H-Grade)
l
±15
±40
nA
IPFI
PFI Input Current
VPFI = 0.55V (C-Grade) (I-Grade)
VPFI = 0.55V (H-Grade)
l
±15
±40
nA
ITMR(UP)
TMR Pull-Up Current
VTMR = 1V
l
–1.5
–2.2
–2.9
A
ITMR(DOWN)
TMR Pull-Down Current
VTMR = 1V
l
1.5
2.2
2.9
A
IPU
RST, PFO Pull-Up Current
VPIN = 0V
l
–20
–29
–40
A
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VADJ = 0.55V, VPFI = 0.55V, V1 = 3.3V unless otherwise noted. (Notes 2, 3)