LM2594N-3.3 National Semiconductor, LM2594N-3.3 Datasheet - Page 7

• Manufacturer Part Number: LM2594N-3.3
• Description: SWITCHING REG 0.5A 3.3V, 2594, DIP8
• Manufacturer: National Semiconductor

Specifications of LM2594N-3.3

• Primary Input Voltage: 12V
• No. Of Outputs: 1
• Output Voltage: 3.3V
• Output Current: 500mA
• Voltage Regulator Case Style: DIP
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +125°C
• Svhc: No SVHC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Typical Performance Characteristics
Continuous Mode Switching Waveforms
V
L = 100 µH, C
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.2A/div.
C: Output Ripple Voltage, 20 mV/div.
Load Transient Response for Continuous Mode
V
L = 100 µH, C
A: Output Voltage, 50 mV/div. (AC)
B: 200 mA to 500 mA Load Pulse
IN
IN
= 20V, V
= 20V, V
Horizontal Time Base: 50 µs/div.
OUT
OUT
Horizontal Time Base: 2 µs/div.
OUT
OUT
= 5V, I
= 5V, I
= 120 µF, C
= 120 µF, C
LOAD
LOAD
= 400 mA
= 200 mA to 500 mA
OUT
OUT
ESR = 140 m
ESR = 140 m
DS012439-19
DS012439-17
Discontinuous Mode Switching Waveforms
V
L = 33 µH, C
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.2A/div.
C: Output Ripple Voltage, 20 mV/div.
Load Transient Response for Discontinuous Mode
V
L = 33 µH, C
A: Output Voltage, 50 mV/div. (AC)
B: 100 mA to 200 mA Load Pulse
7
IN
IN
= 20V, V
= 20V, V
Horizontal Time Base: 200 µs/div.
OUT
OUT
Horizontal Time Base: 2 µs/div.
OUT
OUT
= 5V, I
= 5V, I
= 220 µF, C
= 220 µF, C
LOAD
LOAD
= 200 mA
= 100 mA to 200 mA
OUT
OUT
ESR = 60 m
ESR = 60 m
DS012439-20
DS012439-18
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