LTC2952 Linear Technology, LTC2952 Datasheet - Page 4

• Manufacturer Part Number: LTC2952
• Description: Pushbutton PowerPath Controller
• Manufacturer: Linear Technology

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ELECTRICAL CHARACTERISTICS
LTC2952
temperature range, otherwise specifications are at T
SYMBOL
Debounce Time Pins (ONT, OFFT)
I
t
t
Accurate Comparator Input Pins (VM, PFI, M1, M2, KILL)
V
V
V
I
I
V
I
Watchdog/Extend Pin (WDE)
V
V
I
I
Open-Drain Output Pins (G1STAT, INT, RST, PFO)
I
V
High Voltage Open-Drain Output Pin (EN)
I
V
Voltage Monitor/Watchdog Timing
t
t
t
t
t
4
ONT,OFFT
DB,ON/OFF
ONT,OFFT
IN_LKG
M1_SRC
M1_LKG
WDE(IN,HL)
WDE(IN,HZ)
OUT_LKG
EN(LKG)
RST
WDE
WDE(PW MIN)
VM(UV)
PFI
TH_VM
TH
HYS
M1(VOC)
WDE(H,TH)
WDE(L,TH)
OL
EN(VOL)
PARAMETER
ONT/OFFT Pull-Up/Pull-Down Current
When Timer Is Active
Internal Default On-Time/Off-Time
Additional Adjustable Turn-On/Turn-
Off Time (Note 7)
VM Input Reset Threshold
PFI, M1, M2, KILL Input Threshold
Voltage
PFI, M1, M2, KILL Input Hysteresis
VM, PFI, M2, KILL Input Current
M1 Input Pull-Up Current
M1 Voltage Open-Circuit
M1 Input Leak Current
Input High Threshold Voltage
Input Low Threshold Voltage
High Low Input Current (Note 8)
Hi-Z Input Current
Leakage Current
Voltage Output Low
EN Leakage Current
EN Voltage Output Low
Reset Timeout Period
Watchdog Timeout Period
Minimum Period Between
Consecutive Edges
VM Undervoltage Detect to RST
PFI Delay to PFO
A
CONDITIONS
V
(Pull-Down)
t
PB Low → EN High, t
Between PB Low → INT High
C
Both Falling and Rising
Falling
V = 0.5V
M1 = 1V
M1 = 6V
V
V
I
V
I
V1 = 1.2V and/or V2 = 1.2V, I
VM Less Than V
PFI More or Less Than V
Than 1%
DB,ON
PIN
EN
ONT,
ONT
WDE
PIN
EN
= 25°C. V1 = V2 = VS = 2.7V TO 28V unless otherwise noted. (Notes 2, 3)
= 3mA
= 1mA
= 28V, EN Sink Current Off
= 5V
V
= 1500pF , C
= 0.7V, 1.1V
: C
The
OFFT
ONT
= 0V (Pull-Up), V
l
= Open, Measured Time Between
denotes the specifications which apply over the full operating
TH_VM
OFFT
= 1500pF
DB,OFF
by More Than 1%
PFI_TH
: Measured Time
ONT,
EN
by More
= 100μA
V
OFFT
= 1.5V
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
0.492
0.492
MIN
±1.6
–1.5
±10
140
0.3
1.1
18
10
5
1
0.500
0.500
±2.0
0.05
TYP
200
150
150
1.6
26
15
15
–3
4
5
0.508
0.508
MAX
±2.4
±0.1
±0.1
±25
260
1.5
0.4
0.4
0.3
2.1
34
20
25
–5
±1
±1
10
6
UNITS
2952fa
mV
ms
ms
ms
μA
μA
μA
μA
μA
μA
μA
μA
μs
μs
μs
V
V
V
V
V
V
V
V
s