lt2940 Linear Technology Corporation, lt2940 Datasheet - Page 6

• Manufacturer Part Number: lt2940
• Description: Power And Current Monitor
• Manufacturer: Linear Technology Corporation

200mV/DIV
LT2940
TYPICAL PERFORMANCE CHARACTERISTICS
6
–1000
–1500
V
1500
1000
–500
–100
–200
–300
IMON
500
300
200
100
–300
0
0
–4
PMON Current
vs Power Sense Product
IMON Current vs Current
Sense Voltage
PMON Step Response
V
V
V
V
R
C
V
T
IMON
CC
V
I
A
–200
PMON
L
CC
V
= V
= 40 • V
V
V
= 8pF
= 25°C
PMON
≥ 15V
PMON
PMON
= 12V
V
I +
IMON
= 0.5V
= 2k ON 2V
– V
–2
–100
= 4V
= 0.5V
= 0V
I
I –
= 0V
V
V
500ns/DIV
V
V
I
TO ABSOLUTE MAXIMUM
= 200mV
V
= ±2V
DC
V
APPROXIMATELY FLAT
• V
OUTPUT CURRENT IS
I
0
0
(mV)
BIAS
VOLTAGE LIMITS
I
(V
2
)
100
2
200
2940 G10
2940 G04
2940 G07
300
4
200mV/DIV
V
–100
–200
–300
IMON
300
200
100
–1
–2
2
1
0
–200
0
–5
PMON and IMON Voltage
Compliance
IMON Total Error vs Current
Sense Voltage
PMON Step Response
ONE REPRESENTATIVE UNIT
T
R
C
V
T
A
A
PMON
L
CC
= 25°C
= 8pF
= 25°C
= 12V
= 2k ON 2V
0
V
CC
OUTPUT VOLTAGE (V)
V
= 6V
V
V
CC
I
V
250ns/DIV
V
= ±200mV
5
V
= 2V
= 6V V
CC
V
CC
DC
I = 200μA
I = –200μA
I
(mV)
V
= 80V
0
= 12V
BIAS
CC
= 12V
10
CC
= 12V
V
15
CC
V
30V
= 30V
CC
2940 G11
2940 G08
2940 G05
=
200
20
200mV/DIV
V
IMON
3.6
3.4
3.2
3.0
2.8
2.6
2.4
–1
–2
–3
3
2
1
0
–50
Supply Current vs Supply Voltage
IMON Error Band vs Temperature
0
IMON Step Response
–200mV ≤ V
V
R
C
V
T
I –
A
L
CC
IMON
–25
= 8pF
= 25°C
= 12V
= 12V
20
= 2k ON 2V
0
TEMPERATURE (°C)
I
≤ 200mV
V
I
= ±200mV
40
250ns/DIV
25
DC
V
CC
BIAS
50
(V)
I
I
I
I
I
I
PMON
IMON
PMON
IMON
PMON
IMON
60
= 200μA
= 0μA
= –200μA
= 200μA
= 0μA
= –200μA
75
V
V
V
V
CC
CC
CC
CC
80
= 12V
= 80V
= 12V
= 80V
100
2949 G09
2940 G12
2940 G06
2940f
125
100