PAM2845 datasheet(5/14 Pages) PAM

5 / 14 page

Electrical Characteristic

T =25°C, V =ENA=12V, L=22 H, Rset=10k

unless otherwise noted

AIN

μΩ,

Power Analog Microelectronics Inc

www.poweranalog.com

08/2008 Rev 1.0

PARAMETER

Conditions

Min

Typ

Max

Units

Input Voltage Range

4.8

ENA=high (no switching)

Fsel=high (1.6M switching frequency)

Fsel =high (1M switching frequency)

Fsel =high (500k switching frequency)

Quiescent Current

ENA=low

μA

LDO Stage

Vcc_5V

4.5

5.5

Vcc_5V current_limit

Vcc_5V UVLO Threshold

3.9

4.2

4.5

Vcc_5V UVLO Hysteresis

Vcc_driver

4.5

5.5

Vcc_driver current_limit

Vcc_driver UVLO Threshold

3.9

4.2

4.5

Vcc_driver UVLO Hysteresis

Boost Stage

Feedback Voltage

1.2

Switch Rdson

Vcc_5V=5V

0.2

Switch Current Limit

2.5

Switch Leakage Current

μA

Fsel =Vcc_5V

1.6

MHz

Fsel =Open

1.0

MHz

Switching Frequency

Fsel =Gnd

500

kHz

Fsel =Vcc_5V

Fsel =Open

Minimums Duty Cycle

Fsel =Gnd

Maximums Duty Cycle

VC Source Current

VC Sink Current

PAM2845

40V High Power Boost Convertor

with 6 Channel Constant Current Source

PAM2845 数据表(PDF) 5 Page - Power Analog Micoelectronics

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