MIC5201_05 Datasheet, PDF (3/9 Pages) Micrel Semiconductor – 200mA Low-Dropout Regulator

MIC5201
Micrel, Inc.
Electrical Characteristics
V_IN = V_OUT + 1V; I_L = 100µA; C_L = 3.3µF; V_EN ≥ 2.0V; T_J = 25°C, bold values indicate –40°C ≤ T_J ≤ +85°C; unless noted
Symbol
Parameter
Condition
Min Typ Max
Units
V_O
Output Voltage Accuracy
Variation from specified V_OUT
–1
1
%
–2
2
%
∆V_O/∆T
∆V_O/V_O
Output Voltage Temperature Coef.
Line Regulation, Fixed
Note 2
V_IN = V_OUT + 1V to 26V
40
0.004
150 ppm/°C
0.20
%
0.40
%
∆V_O/V_O
Line Regulation, Adjustable
V_IN = V_OUT + 1V to 16V
0.004 0.20
%
0.40
%
∆V_O/V_O
Load Regulation
I_L = 0.1mA to 200mA, Note 3
0.04 0.16
%
0.30
%
V_IN – V_O
Dropout Voltage, Note 4
I_GND
I_GND
Quiescent Current
Ground Pin Current
PSRR
Ripple Rejection
I_L = 100µA
I_L = 20mA
I_L = 50mA
I_L = 100mA
I_L = 200mA
V_ENABLE ≤ 0.7V (shutdown)
I_L = 100µA
I_L = 20mA
I_L = 50mA
I_L = 100mA
I_L = 200mA
17
mV
130
mV
180
mV
225
mV
270 400 mV
0.01
µA
130
µA
270 400
µA
500
µA
1000 2000 µA
3000
µA
75
dB
I_GNDDO
Ground Pin Current at Dropout
I_LIMIT
Current Limit
∆V_O/∆P_D
Thermal Regulation
e_n
Output Noise
Enable Input
V_IN = 0.5V less than specified V_OUT,
I_L = 100µA, Note 5
V_OUT = 0V
Note 6
270 330
µA
280 500 mA
0.05
%/W
100
µV
V_IL
Input Voltage Level
V_IH
Input Voltage Level
I_IL
Enable Input Current
I_IH
Enable Input Current
Reference (MIC5201 Adjustable Version Only)
logic low (off)
logic high (on)
V_IL ≤ 0.7V
V_IH ≤ 2.0V
0.7
V
2.0
V
0.01
1
µA
15
50
µA
V_REF
Reference Voltage
1.223 1.242 1.255 V
1.217
1.267 V
I_IL
Reference Voltage Temp. Coef.
20
ppm/°C
General Note: Devices are ESD sensitive. Handling precautions recommended.
Note 1:
Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when
operating the device outside of its rated operating conditions. The maximum allowable power dissipation is a function of the maximum junction
temperature, T_J(max), the junction-to-ambient thermal resistance, θ_JA, and the ambient temperature, T_A. The maximum allowable power
dissipation at any ambient temperature is calculated using: P_(max) = (T_J(max) – _AT) ÷ θ_JA. Exceeding the maximum allowable power dissipation
will result in excessive die temperature, and the regulator will go into thermal shutdown. The θ_JC of the MIC5201-x.xBS is 15°C/W and θ_JA for
the MIC5201BM is 160°C/W mounted on a PC board (see “Thermal Considerations” section for further details).
Note 2: Output voltage temperature coefficient is defined as the worst-case voltage change divided by the total temperature range.
Note 3: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load
range from 0.1mA to 200mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
Note 4: Dropout Voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V
differential.
Note 5: Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of
the load current plus the ground pin current.
Note 6: Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line
regulation effects. Specifications are for a 200mA load pulse at V_IN = 26V for fixed and V_IN = 16V for adjustable at t = 10ms.
June 2005
3
MIC5201