MAX8821 Просмотр технического описания (PDF) - Maxim Integrated

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производитель

MAX8821

White LED Charge Pump with Mono Class D Audio Amp and Dual LDO

Maxim Integrated 

White LED Charge Pump with Mono Class D

Audio Amp and Dual LDO

ELECTRICAL CHARACTERISTICS (continued)

(VIN1 = VIN2 = VIN3 = VDD = 3.6V, VAGND = VPGND1 = VPGND2 = 0V, circuit of Figure 2, TA = -40°C to +85°C, unless otherwise noted.

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

PARAMETER

CONDITIONS

Programmable Output

ILDO1 = 50mA

control bits B3:B0;

Voltage

see Table 13

Shutdown Output

Impedance

LDO1 disabled through I2C

LDO2

Output Voltage VLDO2

3.6V ≤ VIN3 ≤ 5.5V,

1mA ≤ ILDO2 ≤ 200mA

Maximum Output

Current

Output Current Limit

Dropout Voltage

Line Regulation

Load Regulation

VLDO2 = 0V

ILDO2 = 133mA, TA = +25°C (Note 5)

VIN3 stepped from 3.4V to 5.5V, ILDO2 = 100mA

ILDO2 stepped from 1mA to 200mA

Power-Supply

Rejection

ΔVIN3/ΔVLDO2

10Hz to10kHz,

ILDO2 = 20mA

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

MIN TYP MAX UNITS

1.164 1.2 1.236

1.261 1.3 1.339

1.455 1.5 1.545

1.552 1.6 1.648

1.746 1.8 1.854

1.843 1.9 1.957

1.940 2.0 2.060

2.231 2.3 2.369

V

2.425 2.5 2.575

2.522 2.6 2.678

2.619 2.7 2.781

2.716 2.8 2.884

2.813 2.9 2.987

2.910 3.0 3.090

3.007 3.1 3.193

3.104 3.2 3.296

1

kΩ

1.455 1.500 1.545

V

200

mA

250

550

750

mA

100

200

mV

2.4

mV

25

mV

70

dB

Output Voltage Noise 100Hz to100kHz,

(RMS)

ILDO2 = 20mA

45

µVRMS

6 _______________________________________________________________________________________

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