Datasheet

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
V
RT33
3.3V, 5% Reset Threshold V1 Input
l
3.036 3.086 3.135 V
V
RT50
5V, 5% Reset Threshold V2 Input (LTC2911-1)
l
4.600 4.675 4.750 V
V
RT25
2.5V, 5% Reset Threshold V2 Input (LTC2911-2)
l
2.300 2.338 2.375 V
V
RT18
1.8V, 5% Reset Threshold V2 Input (LTC2911-3)
l
1.656 1.683 1.710 V
V
RT12
1.2V, 5% Reset Threshold V2 Input (LTC2911-4)
l
1.104 1.122 1.140 V
V
RTA
ADJ Pin Threshold ADJ Input and V2 Input of
LTC2911-5
l
492.5 500 507.5 mV
V
PFT
PFI Pin Threshold PFI Input Threshold (Falling)
l
492.5 500 507.5 mV
∆V
PFT
PFI Hysteresis
l
10 15 19 mV
V
CC,OP
Minimum Operating Voltage to Guarantee PFO
High (Note 3)
V
PFI
= 0.55V
l
2.3 V
I
V1
V1 input Current (Note 4) V1 = 3.3V, V1 > V2
l
10 30 80 µA
V1 = 3.3V, V1 < V2
l
3 10 30 µA
I
V2
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
l
l
l
l
l
10
3
2
2
35
10
10
10
80
30
30
30
±15
±40
µA
µA
µA
µA
nA
nA
I
ADJ
ADJ Input Current V
ADJ
= 0.55V (C-Grade) (I-Grade)
V
ADJ
= 0.55V (H-Grade)
l
l
±15
±40
nA
nA
I
PFI
PFI Input Current V
PFI
= 0.55V (C-Grade) (I-Grade)
V
PFI
= 0.55V (H-Grade)
l
l
±15
±40
nA
nA
I
TMR(UP)
TMR Pull-Up Current V
TMR
= 1V
l
–1.5 –2.2 –2.9 µA
I
TMR(DOWN)
TMR Pull-Down Current V
TMR
= 1V
l
1.5 2.2 2.9 µA
I
PU
RST, PFO Pull-Up Current V
PIN
= 0V
l
–20 –29 –40 µA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
ADJ
= 0.55V, V
PFI
= 0.55V, V1 = 3.3V unless otherwise noted. (Notes 2, 3)