mc33466 ON Semiconductor, mc33466 Datasheet - Page 10

• Manufacturer Part Number: mc33466
• Description: Fixed Frequency Pwm Micropower Dc-to-dc Converter
• Manufacturer: ON Semiconductor

NOTE: Using the MC33464N−30ATR reduces current drawn in the startup circuit to 1 mA during normal operation.
5.0 V
V
in
100 μF
1.0 k
MMBT2907ALT1
100
Figure 25. Micropower Step−Down Application
Lx
3
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MBRD0520LT1
V
Drive
Controller
Oscillator
MC33464N−30ATR
Lx
50 kHz
PWM
Limiter
10
MC33466H−33JT1
Gnd
In
3
2
Out
Startup Circuit
Soft−Start
Phase
Comp
10 k
1
47 μH
MMBT2222ALT1
10 k
V
ref
1
Gnd
Output
2
100 μF
V
3.3 V
300 mA
O