LM2599SX-12/NOPB National Semiconductor, LM2599SX-12/NOPB Datasheet - Page 7

• Manufacturer Part Number: LM2599SX-12/NOPB
• Description: IC REG SW 12V 3A STP DN TO-263-7
• Manufacturer: National Semiconductor
• Series: SIMPLE SWITCHER®r
• Type: Step-Down (Buck)r

Specifications of LM2599SX-12/NOPB

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 12V
• Current - Output: 3A
• Frequency - Switching: 150kHz
• Voltage - Input: 4.5 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (7 leads + tab)
• For Use With: 551011367-021 - BOARD WEBENCH BUILD IT LM2599
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: *LM2599SX-12; *LM2599SX-12/NOPB; LM2599SX-12

Typical Performance Characteristics
Continuous Mode Switching Waveforms
V
L = 32 µH, C
A: Output Pin Voltage, 10V/div.
B: Inductor Current 1A/div.
C: Output Ripple Voltage, 50 mV/div.
Load Transient Response for Continuous Mode
V
L = 32 µH, C
A: Output Voltage, 100 mV/div. (AC)
B: 500 mA to 2A Load Pulse
Connection Diagrams and Order Information
IN
IN
Bent and Staggered Leads, Through Hole Package
= 20V, V
= 20V, V
Order Number LM2599T-3.3, LM2599T-5.0,
Horizontal Time Base: 50 µs/div.
See NS Package Number TA07B
OUT
OUT
Horizontal Time Base: 2 µs/div.
OUT
OUT
LM2599T-12 or LM2599T-ADJ
= 5V, I
= 5V, I
= 220 µF, C
= 220 µF, C
7-Lead TO-220 (T)
LOAD
LOAD
= 2A
= 500 mA to 2A
OUT
OUT
ESR = 50 m
ESR = 50 m
DS012582-50
DS012582-21
DS012582-20
Discontinuous Mode Switching Waveforms
V
L = 10 µH, C
A: Output Pin Voltage, 10V/div.
B: Inductor Current 0.5A/div.
C: Output Ripple Voltage, 100 mV/div.
Load Transient Response for Discontinuous Mode
V
L = 10 µH, C
A: Output Voltage, 100 mV/div. (AC)
B: 500 mA to 2A Load Pulse
(Circuit of Figure 1 ) (Continued)
7
IN
IN
= 20V, V
= 20V, V
Order Number LM2599S-3.3, LM2599S-5.0,
Horizontal Time Base: 200 µs/div.
OUT
OUT
Horizontal Time Base: 2 µs/div.
See NS Package Number TS7B
OUT
OUT
LM2599S-12 or LM2599S-ADJ
Surface Mount Package
= 5V, I
= 5V, I
= 330 µF, C
= 330 µF, C
7-Lead TO-263 (S)
LOAD
LOAD
= 500 mA
= 500 mA to 2A
OUT
OUT
ESR = 45 m
ESR = 45 m
DS012582-23
DS012582-22
DS012582-19
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