MIC2219 Datasheet, PDF (4/10 Pages) Micrel Semiconductor – Dynamically Adjustable Dual uCap LDO

MIC2219
Micrel, Inc.
Absolute Maximum Rating (Note 1)
Supply Input Voltage (V_IN) .................................... 0V to 7V
Enable Input Voltage (V_EN) ................................... 0V to 7V
Power Dissipation (P_D) ............... Internally Limited, Note 3
Junction Temperature .............................. –40°C to +125°C
Storage Temperature (T_S) ......................... –65°C to 150°C
Lead Temperature (soldering, 5 sec.) ....................... 260°C
Operating Ratings (Note 2)
Supply Input Voltage (V_IN) ............................ 2.25V to 5.5V
Enable Input Voltage (V_EN) .................................. 0V to Vin
Junction Temperature (T_J) ....................... –40°C to +125°C
Package Thermal Resistance
MLF™-10 (θ_JA) .................................................... 60°C/W
MLF™-10 (θ_JC) 1" square 2 oz. copper ................ 2°C/W
Electrical Characteristics (Note 4)
V_IN = V_OUT +1.0V for higher output of the regulator pair; C_OUT = 1.0µF, I_OUT = 100µA; T_J = 25°C, bold values indicate
–40°C ≤ T_J ≤ +125°C; unless noted.
Parameter
Conditions
Min Typ
Max
Units
Output Voltage Accuracy
Variation from nominal V_OUT
–1.0
+1.0
%
–2.0
+2.0
%
Output Voltage Temp. Coefficient
40
ppm/C
Line Regulation; Note 5
V_IN = V_OUT +1V to 5.5V
–0.3 0.02 0.3 %/V
–0.6
0.6
Load Regulation
I_OUT = 100µA to 150mA (regulator 1 and 2)
0.2
1.0
%
Dropout Voltage; Note 6
I_OUT = 100µA to 300mA (regulator 2)
I_OUT = 150mA (regulator 1 and 2)
1.5
%
120 190 mV
250 mV
I_OUT = 300mA (regulator 2)
240 340 mV
420
Ground Pin Current
I_OUT1 = I_OUT2 = 0µA
48
65
µA
80
µA
Ground Pin Current in Shutdown
Ripple Rejection
Current Limit
Output Voltage Noise
Feedback Inputs
I_OUT1 = 150mA & I_OUT2 = 300mA
V_EN ≤ 0.4V
f = 1kHz; C_OUT = 1.0µF ceramic; C_BYP = 10nF
f = 1kHz; C_OUT = 1.0µF ceramic; C_BYP = 10nF
V_OUT = 0V (regulator 1)
V_OUT = 0V (regulator 2)
C_OUT =1µF, C_BYP =0.01µF, 10Hz to 100kHz
60
µA
1.0
µA
60
dB
40
dB
150 280 460 mA
300 450 700 mA
30
µVrms
FB1
Resistance value, output1, V_OUT to FB1
Resistance value, output1, FB1 to GND
830
kΩ
580
kΩ
FB2
Resistance value, output2, V_OUT to FB2
Resistance value, output2, FB2 to GND
972
kΩ
580
kΩ
Enable Input
Enable Input Voltage
Logic low (regulator shutdown)
0.6
V
Logic high (regulator enabled)
1.8
V
Enable Input Current
V_IL < 0.6V (regulator shutdown)
V_IH > 1.8V (regulator enabled)
–1 0.01 +1
µA
–1 0.01 +1
µA
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Exceeding maximum rating may damage the device.
The device is not guaranteed to work outside its operating rating.
The maximum allowable power dissipation of any T_A (ambient temperature) is P_D(max) = (T_J(max) – T_A) / θ_JA. Exceeding the maximum
allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
Specification for packaged product only.
Minimum input for line regulation test is set to V_OUT + 1V relative to the highest output voltage.
M9999-042105
4
April 2005