Rainbow-electronics MAX742 Manual do Utilizador descarregar pdf (Página 3)

MAX742

Switch-Mode Regulator with

+5V to ±12V or ±15V Dual Output

_______________________________________________________________________________________ 3

Note 1: Devices are 100% tested to these limits under 0mA to 100mA and to 125mA conditions using automatic test equipment.

The ability to drive loads up to 1A is guaranteed by the current-limit threshold, output swing, and the output current

source/sink tests. See Figures 2 and 3.

Note 2: Actual load capability of the circuit of Figure 2 is ±200mA in ±15V mode and ±250mA in ±12V mode. Load regulation is

tested at lower limits due to test equipment limitations.

Note 3: Guaranteed by design.

Note 4: Measured at Point A, circuit of Figure 2, with PDRV disconnected.

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 2, V+ = 5V, 100/200 = 12/15 = 0V; T

= T

MIN

to T

MAX

, unless otherwise noted.)

EXT+, EXT-, I

= -1mA, V+ = 4.5V, PDRV= -3V

EXT+, EXT-, I

= 1mA, V+ = 4.5V, PDRV= -3V

V+ = 3.8V, SS = 2V

CC+, CC-

V+ = 4.5V, PDRV = -3V,

= +25°C

V+ = 4.5V, I

= -5mA, T

= +25°C

SS = 0V

CONDITIONS

mA-2 -0.5Soft-Start Sink Current

µA37Soft-Start Source Current

V-2.8V

V4.3V

Output Voltage High

Output Voltage Low

°C190Thermal-Shutdown Threshold

kΩ10Compensation Pin Impedance

100 200

Output Sink Current

200 350

V-3PUMP Output Voltage (Note 4)

UNITSMIN TYP MAXSYMBOLPARAMETER

EXT+ = 4.5V

EXT- = 4.5V

EXT+ = 0V

V+ = 4.5V, PDRV = -3V,

= +25°C

EXT- = -3V

-200 -100

Output Source Current

-350 -200

EXT+, C

LOAD

= 2nF

Output Rise/Fall Time

100EXT-, C

LOAD

= 4nF, PDRV = -3V

1 2 3 4 5 6 7 8 ... 11 12

Switch-Mode Regulator with 1

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