SC310 Datasheet, PDF (3/12 Pages) Semtech Corporation – High-Side Current-Sense Amplifier with Low Impedance Voltage Output

SC310
POWER MANAGEMENT
Electrical Characteristics (Cont.)
V_CS+ = 2.7V to 25V, V_CC = 3V to 25V, V_SENSE = 0, T_A = T_J = -40°C to +125°C , unless otherwise specified
Parameter
Symbol
Conditions
Min
Typ
Total OUT Voltage Error
OUT High Voltage
3dB Bandwidth
GAIN
V -V
CC OH
BW
A_V
V_SENSE= +100mV, V_CC = 25V,
V_CS+ = 25V, T_A = 125°C
V_SENSE= +6.25mV, V_CC =
12V, V_CS+ = 12V, -40°C ≤
T_A ≤ 125°C
-5°C ≤ T ≤ +125°C
A
SC310A, V = +100mV
SENSE
SC310B, V_SENSE = +100mV
SC310C, V_SENSE = +100mV
SC310A
SC310B
1
+/- 7.5
2
1.4
0.9
20
50
SC310C
100
Gain Accuracy
V_SENSE = +100mV,
SC310A/B/C
OUT Output Resistance ⁽¹⁾
R_OUT
V_SENSE = +16mV
60
Power-Supply Rejection
PSRR
V_SENSE= 16mV
V > +2.7V
CS+
60
70
OUT Settling Time to 1% of
the Final Value
V_CC = +12V
V_SENSE=
2
V_CS+ = +12V +6.25mV
C = _LOAD 5pF
to
+100mV
V=
2
SENSE
+100mV
to
+6.25mV
Power-Up Time to 1% of the
Final Value ⁽²⁾
V_SENSE= +100 mV,
50
C = _LOAD 5pF,V_CC = +12V
V_CS+ = +12V
Input bias current for SHDN
I_SHDN
V_SHDN = +5V
V_SHDN Threshold (device on)
V_{SHDN_TH_ON}
3V ≤ V_cc ≤ 25V
V_SHDN Threshold (device off)
V_{SHDN_TH_OFF}
3V ≤ V_cc ≤ 25V
2
Supply Current for SHDN
I_CC
V_cc = 12V, V_SHDN = +5V
11
Note (1): SC310 has a low impedence output. However the maximum output drive capability is limited to 500uA
Note (2): Defined with respect to Shutdown signal. Time taken for output to go high as V_SHDN switches from 5V to 0V
Max
4.75
1.7
4.0
7
350
Units
%
V
MHz
V/V
%
Ω
dB
μS
μS
μA
mV
V
μA
© 2005 Semtech Corp.
3
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