RH1185AMK Datasheet, PDF (2/6 Pages) Linear Technology – Negative Regulator with Adjustable Current Limit

RH1185AMK
TABLE 1: ELECTRICAL CHARACTERISTICS
(Preirradiation) V_IN = 7.4V, V_OUT = 5V, I_OUT = 1mA, R_LIM = 4.02k, unless otherwise noted.
PARAMETER AND CONDITIONS
T_A = 25°C
MIN
TYP
MAX
SUB-
GROUP
–55°C ≤ T_A ≤ 125°C
MIN
TYP
MAX
Reference Voltage (At FB Pin)
2.37
2.37
Reference Voltage Tolerence (At FB Pin) (Note 2)
V_IN – V_OUT = 5V, V_OUT = V_REF
–1.0
0.3
1.0
1
Reference Voltage Tolerance
V_IN – V_OUT = 1.2V to V_IN = 30V,
–2.5
1mA ≤ I_OUT ≤ 3A,
P_D ≤ 25W (Note 6), V_OUT = 5V,
T_MIN ≤ T_J ≤ T_MAX (Note 9)
Feedback Pin Bias Current, V_OUT = V_REF
0.7
2
1
Dropout Voltage (Note 3)
I_OUT = 0.5A, V_OUT = 5V
I_OUT = 3A, V_OUT = 5V
0.2
0.37
1
0.67
1
1
Load Regulation (Note 7) I_OUT = 5mA to 3A,
V_IN – V_OUT = 1.5V to 10V, V_OUT = 5V
0.05
0.3
1
Line Regulation (Note 7)
V_IN – V_OUT = 1V to 20V, V_OUT = 5V
0.002 0.01
1
Minimum Input Votlage (Note 4)
I_OUT = 1A, V_OUT = V_REF
I_OUT = 3A, V_OUT = V_REF
3.9
1
4.4
1
Internal Current Limit (See Graph for Guaranteed
Curve) (Note 12)
1.5V ≤ V_IN – V_OUT ≤ 10V
V_IN – V_OUT = 15V
V_IN – V_OUT = 20V
V_IN – V_OUT = 30V
3.3
3.6
4.2
1
3.1
2
3
4.2
1
2
1
1.7
2.6
1
1
0.2
0.4
1
1
0.2
External Current Limit (Note 11)
R_LIM = 5k, V_OUT = 1V
R_LIM = 15k, V_OUT = 1V
2.7
3
3.3
1
2.5
0.9
1
1.1
1
0.8
Quiescent Supply Current (Note 5)
I_OUT = 5mA, V_OUT = V_REF , 4V ≤ V_IN ≤ 25V
2.5
3.5
1
Supply Current Change With Load
V_IN – V_OUT = V_SAT (Note 10)
V_IN – V_OUT ≥ 2V
25
1
15
1
Thermal Regulation
V_IN – V_OUT = 10V, I_OUT = 5mA to 2A
Reference Voltage Temperature Coefficient (Note 8)
2.5
2
0.55
1.4
0.8
0.03
4.4
4.3
3
1.1
3.5
1.2
3.5
40
25
0.014
0.01
SUB-
GROUP
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
UNITS
V
%
%
µA
V
V
%
%/V
V
V
A
A
A
A
A
A
mA
mA
mA
%/W
%/°C
2
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