MAX8794 データシートの表示（PDF） - Maxim Integrated

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MAX8794

Low-Voltage DDR Linear Regulator

Maxim Integrated 

Low-Voltage DDR Linear Regulator

ABSOLUTE MAXIMUM RATINGS

IN to PGND............................................................-0.3V to +4.3V

OUT to PGND ..............................................-0.3V to (VIN + 0.3V)

OUTS to AGND ............................................-0.3V to (VIN + 0.3V)

VCC to AGND.........................................................-0.3V to +4.3V

REFIN, REFOUT, SHDN, PGOOD to AGND...-0.3V to (VCC + 0.3V)

PGND to AGND .....................................................-0.3V to +0.3V

REFOUT Short Circuit to AGND .................................Continuous

OUT Continuous RMS Current

100s ................................................................................±1.6A

1s ....................................................................................±2.5A

Continuous Power Dissipation (TA = +70°C)

10-Pin 3mm x 3mm TDFN

(derated 24.4mW/°C above +70°C)...........................1951mW

Operating Temperature Range

MAX8794ETB...................................................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow) .......................................+260°C

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

(VIN = 1.8V, VCC = 3.3V, VREFIN = VOUTS = 1.25V, SHDN = VCC, circuit of Figure 1, TA = -40°C to +85°C, unless otherwise noted.

Typical values are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Input Voltage Range

Quiescent Supply Current (VCC)

Shutdown Supply Current (VCC)

VIN

VCC

ICC

ICC(SHDN)

Power input

Bias supply

Load = 0, VREFIN > 0.45V

SHDN = GND, VREFIN > 0.45V

SHDN = GND, REFIN = GND

1.1

3.6

V

2.7

3.6

0.7

1.3

mA

350 600

µA

50

100

Quiescent Supply Current (VIN)

IIN

Load = 0

0.4

10

mA

Shutdown Supply Current (VIN) IIN(SHDN) SHDN = GND

0.1

10

µA

Feedback-Voltage Error

VOUTS

REFIN to OUTS,

IOUT = ±200mA

TA = +25°C

-4

TA = -40°C to +85°C -6

0

+4

mV

+6

Load-Regulation Error

-1A ≤ IOUT ≤ +1A

-15

+15

mV

Line-Regulation Error

1.4V ≤ VIN ≤ 3.3V, IOUT = ±100mA

1

mV

OUTS Input Bias Current

IOUTS

-1

+1

µA

OUTPUT

Output Adjust Range

0.5

1.5

V

OUT On-Resistance

Output Current Slew Rate

High-side MOSFET (source) (IOUT = 0.1A)

Low-side MOSFET (sink) (IOUT = -0.1A)

COUT = 100µF, IOUT = 0.1A to 2A

0.10 0.169

Ω

0.10 0.20

3

A/µs

OUT Power-Supply Rejection

Ratio

PSRR

10Hz < f < 10kHz, IOUT = 200mA,

COUT = 100µF

80

dB

OUT to OUTS Resistance

ROUTS

12

kΩ

Discharge MOSFET On-

Resistance

RDISCHARGE SHDN = GND

8

Ω

2 _______________________________________________________________________________________

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