MIC5259(2005) Просмотр технического описания (PDF) - Micrel
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MIC5259 Datasheet PDF : 9 Pages
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MIC5259
Micrel, Inc.
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Input Voltage (VIN) ....................................0V to +7V
EPnoawbelreDInispsuipt aVtoioltnag(PeD(V).E..N..).........................................I.n..t.e..r.n..a..l.l.y.0LVimtoite+d7(3V)
Junction Temperature (TJ) ........................ –40°C to +125°C
Storage Temperature(TS) ......................... –65°C to +150°C
Lead Temperature (soldering, 5 sec.)........................ 260°C
ESD(4)............................................................................ 2kV
Input Voltage (VIN).......................................... +2.7V to +6V
Enable Input Voltage (VEN) ...................................0V to VIN
Junction Temperature (TJ) ........................ –40°C to +125°C
Thermal Resistance
ThinSOT™-23 (θJA) ...........................................235°C/W
2mm × 2mm MLF™ (θJA) ....................................90°C/W
Electrical Characteristics(5)
VIN = VOUT + 1V, VEN = VIN; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted.
Symbol
Parameter
Conditions
Min Typical Max
Units
VO
Output Voltage Accuracy
IOUT = 100µA
–1.5
1.5
%
–3
3
%
ΔVLNR
ΔVLDR
VIN – VOUT
Line Regulation
Load Regulation
Dropout Voltage(7)
VIN = VOUT + 1V to 6V
IOUT = 0.1mA to 300mA(6)
IOUT = 150mA
IOUT = 300mA
–0.3 0.02 0.3 %/V
0.6
3.0
%
150
mV
300 500 mV
550 mV
IQ
IGND
PSRR
ILIM
en
µV(rms)
Quiescent Current
Ground Pin Current(8)
Ripple Rejection; IOUT = 150mA
Current Limit
Output Voltage Noise
VEN ≤ 0.4V (shutdown)
IOUT = 0mA
IOUT = 300mA
f = 10Hz, COUT = 1.0µF, CBYP = 0.01µF
f = 10Hz, VIN = VOUT + 0.3V
f = 10kHz, VIN = VOUT + 0.3V
VOUT = 0V
COUT = 1.0µF, CBYP = 0.01µF,
f = 10Hz to 100kHz
0.2
1
µA
105 150
µA
120 250
µA
65
dB
53
dB
53
dB
350 475
mA
30
Enable Input
VIL
Enable Input Logic-Low Voltage
VIN = 2.7 to 5.5V, regulator shutdown
0.4
V
VIH
Enable Input Logic-High Voltage
VIN = 2.7V to 5.5V, regulator enabled
1.6
V
IEN
Enable Input Current
VIL ≤ 0.4V, regulator shutdown
0.01
1
µA
VIH ≥ 1.6V, regulator enabled
0.01
1
µA
Shutdown Resistance Discharge
500
Ω
Thermal Protection
Thermal Shutdown Temperature
150
°C
Thermal Shutdown Hysteresis
10
°C
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max)–TA)/θJA. Exceeding the maximum allowable
power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. The θJA of the MIC5259-x.xBM5 (all ver-
sions) is 235°C/W on a PC board. See “Thermal Considerations” section for further details.
4. Devices are ESD sensitive. Handling precautions recommended.
5. Specification for packaged product only.
6. 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 300mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
7. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differen-
tial. For outputs below 2.7V, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.7V. Minimum input operating
voltage is 2.7V.
8. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin cur-
rent.
May 2005
3
M9999-051305
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