The AX34063A Series is a monolithic control circuit containing the primary functions required for DC-to-DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. Output Switch Current to 1.6 A. This series was specifically designed to be incorporated in Step-Down and Step-Up and Voltage-Inverting applications with a minimum number of external components.

Features:
· Output switch current to 1.6 A
· Internal temperature compensation at rating range
· Low Quiescent Current at 1.6mA
· Frequency Operation from 100Hz~100KHz
· Output Voltage Adjustable
· High Presion bandgap reference voltage source
· Step-Up, Step-Down or Inverting Switching Regulators

Package: DIP-8, SO-8

Parameter

Symbol

Test Condition

Min.

Typ.

Max.

Unit

Frequency

f_OSC

V_PIN5=0, C_T=1nF, T_A=25^oC

28

33

40

KHz

Discharge to Charge Current Ratio

I_dischg/I_chg

V_PIN7=V_CC, T_A=25^oC

5.2

6

7.5

Current Limit Sense Voltage

V_IPK

I_dischg=I_chg, T_A=25^oC

250

300

350

mV

Saturation Voltage,

Darlington Connection

V_CE(sat) 1

I_SW=1A, V_C(SW)=V_C(DR)

-

1

1.3

V