Rev. D 10/20

10

TOP232-234

www.power.com

-250

-200

-150

-100

-50

050

100

150

200

250

300

350

400

PI-2524-081999

Output

MOSFET

Switching

(Enabled)

(Disabled)

ILIMIT (Default)

DCMAX (78.5%)

Current

Limit

Maximum

Duty Cycle

VBG

VBG + VTP

IM

IM

IM

IM

IUV

IREM(N)

IOV

MULTI-

FUNCTION

Pin Voltage

Note: This figure provides idealized functional characteristics of the MULTI-FUNCTION pin with typical performance values.

Please refer to the parametric table and typical performance characteristics sections of the data sheet for measured data.

MULTI-FUNCTION Pin Current (µA)

Disabled when supply

output goes out of

regulation

Figure 8. MULTI-FUNCTION Pin Characteristics.

Figure 9. MULTI-FUNCTION Pin Input Simplified Schematic.

VBG + VT

VBG

240

µA

400

µA

CONTROL Pin

MULTI-FUNCTION Pin

(Positive Current Sense - Undervoltage,

Overvoltage, Maximum Duty

Cycle Reduction)

(Negative Current Sense - ON/OFF,

Current Limit Adjustment)

PI-2548-062515

TOPSwitch-FX