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MAX6469TA25BD3

300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit

Maxim Integrated 

300mA LDO Linear Regulators with Internal

Microprocessor Reset Circuit

ELECTRICAL CHARACTERISTICS (continued)

(VIN = (VOUT + 0.5V) or +2.5V, whichever is greater, COUT = 3.3µF, TA = -40°C to +85°C. Typical specifications are at TA = +25°C,

unless otherwise noted.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Dropout Voltage

(Notes 3, 4)

Output Current Limit

VOUT = +3.3V

(fixed output operation)

IOUT = 50mA

IOUT = 150mA

IOUT = 300mA

23

32

55

90

114

180

∆VDO

VOUT = +3.0V

(fixed output operation)

VOUT = +2.8V

(fixed output operation)

IOUT = 50mA

IOUT = 150mA

IOUT = 300mA

IOUT = 50mA

IOUT = 150mA

IOUT = 300mA

25

40

61

100

114

190

mV

26

50

65

110

137

210

VOUT = +2.5V

(fixed output operation)

IOUT = 50mA

IOUT = 150mA

IOUT = 300mA

30

60

75

150

158

250

VIN ≥ 2.5V (Note 3)

450

mA

Input Reverse Leakage Current

(OUT to IN Leakage Current)

VIN = 4V, VOUT = 5.5V, SHDN deasserted

0.01 1.5

µA

Startup Time Response

SHDN Input Low Voltage

SHDN Input High Voltage

SHDN Input Current

Thermal-Shutdown Temperature

Thermal-Shutdown Hysteresis

Line Regulation

Load Regulation

Output Voltage Noise

RESET CIRCUIT

VOUT Reset Threshold

(VFB for MAX6475/MAX6476/

MAX6483/MAX6484) (Note 5)

VIL

VIH

TSHDN

∆TSHDN

Rising edge of VIN or SHDN to VOUT

within specification, RL = 68Ω, SET = GND,

IOUT = 10mA

VSHDN = VIN or VGND

0.7 × VIN

-1

VOUT = 1.5V, 2.5V ≤ VIN ≤ 5.5V,

IOUT = 10mA

VOUT = 1.5V, VIN = 2.5V, 1mA ≤ IOUT ≤

150mA

10Hz to 100kHz,

CIN = 0.1µF,

IOUT = 100mA,

VOUT = 1.5V

MAX6469–MAX6476

MAX6477–MAX6484

20

0.1

180

20

0.09

0.2

150

75

µs

0.3 × VIN V

V

+1

µA

°C

°C

%/V

%

µVRMS

VTHOUT

MAX64_ _ _ _ _ _ A

MAX64_ _ _ _ _ _ B

90

92.5

95

%VOUT

85

87.5

90

VOUT to Reset Delay

(VFB for MAX6475/MAX6476/

MAX6483/MAX6484)

35

µs

Reset Timeout Period

(Note 6)

D1

D2

tRP

D3

D4

2.5

3.75

5.0

20

30

40

ms

150 225 300

1200 1800 2400

_______________________________________________________________________________________ 3

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