Microsemi

Linfinity Microelectronics Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 5

Copyright

 2001

Rev. 1.1,2003-06-10

AudioMAX™

LX1721 / 1722

Class-D Stereo Power Amplifier Controller

I N T E GRA T ED

PR ODUC T S

ELECTRICAL CHA RACTERISTICS (CONTINUED)

LX1721 / 1722

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Current Limit Comparator

Voltage Sense Threshold

190

210

230

mV

Blanking Pulse Delay

500

Response Time

Excluding blanking pulse

250

Latch

4

4

4

Consecutive Clear Pulses required to

2

2

2

Reference Voltage Section

Initial Accuracy

(VREF)

5.0

Voltage Stability

(VREF)

± 50

± 100

Initial Accuracy

(V25)

2.5

Voltage Stability

(V25)

± 25

± 50

mV

Temperature Stability

2

5

Line Regulation

0.5

Load Regulation

5

Under Voltage Lockout Section

Start Threshold Voltage

6

V

UV Lockout Hysteresis

250

mV

UVLO Delay To Output Enable

62,500

clkcyc

Supply Current

Sleep Current

30

µA

Operating Current

No MOSFETs connected

8

11

Sleep to Output Enable

62,500

clkcyc

Sleep Threshold

1.45

1.6

1.75

V

Mute Section

Mute Threshold

1.2

1.35

1.5

V

Output Drivers For N-Channel MOSFETs

30

100

NFET Drivers, Low Level Voltage

0.3

1.0

V

applied externally

30

100

NFET Drivers, High Level Voltage

applied externally

0.3

1.0

V

Output Drives For P-Channel MOSFETs

30

100

PFET Drivers, Low Level Voltage

0.5

1.0

V

(applied externally)

30

100

PFET Drivers, High Level Voltage

(applied externally)

0.5

1.0

V

Note 2: The LX1721 / 22CDB is guaranteed to meet performance specifications from 0° to 70°C. Specifications over the -20° to 0°C operation temperature

range are assured by design, characterization, and statistical process control.