LTC2912 Linear Technology, LTC2912 Datasheet - Page 5

• Manufacturer Part Number: LTC2912
• Description: Single UV/OV Voltage Monitor
• Manufacturer: Linear Technology

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TYPICAL PERFORMANCE CHARACTERISTICS
DIS (Pin 8/Pin 1, LTC2912-2): Output Disable Input.
Disables the OV and UV output pins. When DIS is pulled
high, the OV and UV pins are not asserted except during a
UVLO condition. Pin has a weak (2μA) internal pull-down
to GND. Leave pin open if unused.
Exposed Pad (Pin 9, DDB Package): Exposed Pad may
be left open or connected to device ground.
GND (Pin 5/Pin 4): Device Ground.
LATCH (Pin 8/Pin 1, LTC2912-1, LTC2912-3): OV/OV
Latch Clear/Bypass Input. When pulled high, OV/OV latch
PIN FUNCTIONS
5
4
2
1
0
3
0
UV Output Voltage vs V
VH = 0.55V
SEL = V
1
CC
SUPPLY VOLTAGE, V
2
1.0
0.8
0.6
0.4
0.2
0
UV/OV, Voltage Output Low
vs Output Sink Current
0
3
CC
CC
5
(V)
(DFN/TSOT Packages)
4
85°C
10
2912 G07
I
UV/OV
5
15
(mA)
25°C
20
10000
–40°C
1000
100
10
1
0.1
25
Reset Time-Out Period
vs Capacitance
1912 G10
TMR PIN CAPACITANCE, C
30
1
10
is cleared. While held high, OV/OV has a similar delay and
output characteristic as UV.
OV (Pin 6/Pin 3, LTC2912-1, LTC2912-2): Overvoltage
Logic Output. Asserts low when the VL input voltage is
above threshold. Latched low (LTC2912-1). Held low for
programmed delay time after VL input is valid (LTC2912-2).
Pin has a weak pull-up to V
using an external pull-up. Leave pin open if unused.
12
11
10
9
8
7
6
TMR
–50
100
Reset Timeout Period
vs Temperature
C
TMR
(nF)
–25
2912 G08
= 1nF
1000
TEMPERATURE (°C)
0
25
5
4
1
3
2
0
CC
UV, I
0
50
VH = 0.45V
SEL = V
and may be pulled above V
SINK
75
1
CC
SUPPLY VOLTAGE, V
UV AT 150mV
2912 G11
vs V
100
CC
2
LTC2912
UV AT 50mV
3
CC
(V)
4
2912 G09
5
2912fa
CC
5