TS3063

800mA/180kHz Dc to Dc Converter Controller

3/9

Version: A07

Notes1: Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient

temperature as possible

Note 2: If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents

(≤300mA) and high driver currents (>=30mA), it may take up to 2uS for it to come out of saturation. This

condition will shorten the off time at frequencies >= 30KHz, and is magnified at high temperature. This

condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a non-

Darlington configuration is used, the following output drive condition is recommended:

Forced Bata of output switch: Ic output / (Ic driver – 7mA*) >= 10

* The 100ohm resistor in the emitter of the driver divide requires about 7mA before the output switch conducts.

Electrical Characteristics Curve

Figure 1. Output Switch On-Off Time vs. Oscillator

Timing Capacitor

Figure 2. Current Limit Sense Voltage vs.

Temperature

Figure 3. Standby Supply Current vs. Supply

Voltage