ltc2903-1 Linear Technology Corporation, ltc2903-1 Datasheet - Page 3

• Manufacturer Part Number: ltc2903-1
• Description: Precision Quad Supply Monitor In 6-lead Sot-23
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: All currents into pins are positive, all voltages are referenced to
GND unless otherwise noted.
Note 3: The internal supply voltage (V
voltage on the V1, V2 inputs.
Note 4: Under typical operating conditions, quiescent current is drawn
from the V1 input. When V2 exceeds V1, V2 supplies the quiescent
current.
temperature range, otherwise specifications are at T
SYMBOL
I
I
I
I
t
t
V
V
V1
V2
V3
V4
RST
UV
OH
OL
PARAMETER
V1 Input Current (Note 4)
V2 Input Current (Note 4)
V3 Input Current
V4 Input Current
Reset Time-Out Period
V
Output Voltage High RST (LTC2903-1) (Note 5)
Output Voltage Low RST (Note 6)
X
Undervoltage Detect to RST
CC
) is generated from the greater
A
= 25 C. V
CONDITIONS
V1 = 3.3V (LTC2903-A1)
V1 = 5V (LTC2903-B1, LTC2903-C1)
V2 = 2.5V (LTC2903-A1)
V2 = 3.3V (LTC2903-B1, LTC2903-C1)
V3 = 1.8V (LTC2903-A1, LTC2903-C1)
V3 = 2.5V (LTC2903-B1)
V4 = 0.55V (LTC2903-A1)
V4 = 1.8V (LTC2903-B1)
V4 = –5.2V (LTC2903-C1)
V
More Than 1%
I
V
V
V
V
The
RST(DN)
X
CC
CC
CC
CC
Less Than Threshold V
= 0.2V, I
= 0.5V, I
= 1V, I
= 3V, I
CC
denotes the specifications which apply over the full operating
= –1 A
= 3.3V unless otherwise noted.
RST
RST
Note 5: The RST output pin on the LTC2903-1 has an internal pull-up to
V2 of typically 10 A. However, for faster rise times or for V
greater than V2, use an external pull-up resistor.
Note 6: At input voltages below 1V on V1 and V2, voltage on V3 assists
pulling down the RST output.
RST
RST
= 200 A
= 2500 A
= 0.1 A
= 5 A
RTX
by
V2 – 1
MIN
140
TYP
200
150
100
20
25
10
–3
10
25
8
6
8
2
5
LTC2903-1
MAX
260
150
300
300
80
80
30
30
30
30
–6
60
4
15
OH
voltages
UNITS
29031f
3
mV
mV
mV
mV
ms
nA
A
A
A
A
A
A
A
A
V
s