LTC2930 Linear Technology, LTC2930 Datasheet - Page 5

• Manufacturer Part Number: LTC2930
• Description: Confi gurable Six Supply Monitor
• Manufacturer: Linear Technology

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TYPICAL PERFORMANCE CHARACTERISTICS
PIN FUNCTIONS
V5 (Pin 1): Adjustable Voltage Input 5. High impedance
comparator input with 0.5V typical threshold. See
Applications Information for details. Tie to V1 if unused.
V3 (Pin 2): Voltage Input 3. Select from 2.5V, 1.8V, 1.5V,
or ADJ. See Applications Information for details. Tie to
V1 if unused.
V1 (Pin 3): Voltage Input 1. Select from 5V or 3.3V. See
Applications Information for details. The greater of V1 or
V2 is also V
with a 0.1μF (or greater) capacitor.
100m
CC
100μ
10m
10μ
500
400
200
100
1m
300
10
1
0
for the device. Bypass this pin to ground
10p
0
Reset Timeout Period vs C
Voltage Output Low
vs Output Sink Current (RST)
T
V1 = 5V
V2 = 3V
A
= 25°C
100p
2
1n
25°C
4
I
SINK
C
RT
85°C
(mA)
(F)
10n
6
–40°C
100n
RT
8
125°C
2930 G12
2930 G10
1μ
10
CRT (Pin 4): Reset Timeout Capacitor. Attach an external
capacitor (C
Leaving the pin open generates a minimum delay of
approximately 25μs. A 47nF capacitor generates a 94ms
reset delay time.
RST (Pin 5): Reset Output. Logic output with weak 6μA
pull-up to V2. Pulls low when any voltage input is below
the reset threshold and held low for the confi gured delay
time after all voltage inputs are above threshold. Use an
external pull-up to pull greater than V2. Leave open if
unused.
15
12
18
15
12
6
3
0
9
3
0
9
6
2.0
RT
0
RST Pull-Up Current vs V2
I
T
SINK
T
V
A
A
RT25
) to GND to set a reset timeout of 2ms/nF .
= 25°C
= 25°C
2.5
vs Supply Voltage (RST)
V
RT30
1
V
RT33
3.0
V1 OR V2 (V)
2
V
OL
V2 (V)
3.5
= 0.4V
3
V
4.0
OL
= 0.2V
4
4.5
2930 G11
2930 G13
LTC2930
5.0
5
2930fa
5