LM2599SX-12/NOPB National Semiconductor, LM2599SX-12/NOPB Datasheet - Page 4

• 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

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DEVICE PARAMETERS
I
I
SHUTDOWN/SOFT-START CONTROL Test Circuit of Figure 1
V
V
I
I
FLAG/DELAY CONTROL Test Circuit of Figure 1
VF
IF
Symbol
Q
STBY
SD
SS
JC
JA
JA
JA
JA
All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for T
ture Range. Unless otherwise specified, V
sion. I
SD
SS
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: Voltage internally clamped. If clamp voltage is exceeded, limit current to a maximum of 1 mA.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5k resistor into each pin.
Note 4: Typical numbers are at 25˚C and represent the most likely norm.
Note 5: All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100%
production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used
to calculate Average Outgoing Quality Level (AOQL).
Note 6: External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2599
is used as shown in the Figure 1 test circuit, system performance will be as shown in system parameters section of Electrical Characteristics.
Note 7: The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the severity of current
overload.
L
SAT
LOAD
Operating Quiescent
Current
Standby Quiescent
Current
Thermal Resistance
Shutdown Threshold
Voltage
Soft-start Voltage
Shutdown Current
Soft-start Current
Regulator Dropout Detector
Threshold Voltage
Flag Output Saturation
Voltage
Flag Output Leakage Current
Delay Pin Threshold
Voltage
Delay Pin Source Current
Delay Pin Saturation
= 500 mA
Parameter
IN
(Continued)
SD /SS Pin Open (Note 10)
SD /SS pin = 0V
TO220 or TO263 Package, Junction to Case
TO220 Package, Juncton to Ambient (Note 12)
TO263 Package, Juncton to Ambient (Note 13)
TO263 Package, Juncton to Ambient (Note 14)
TO263 Package, Juncton to Ambient (Note 15)
Low, (Shutdown Mode)
High, (Soft-start Mode)
V
V
V
V
Low (Flag ON)
I
V
V
Low (Flag ON)
High (Flag OFF) and V
V
Low (Flag ON)
SINK
= 12V for the 3.3V, 5V, and Adjustable version and V
OUT
OUT
SHUTDOWN
Soft-start
DELAY
FLAG
DELAY
J
= 25˚C, and those with boldface type apply over full Operating Tempera-
= 3 mA
= 20% of Nominal Output Voltage
= 100% of Nominal Output Voltage
= 40V
= 0.5V
= 0.5V
= 2.5V
= 0.5V
Conditions
4
OUT
(Note 11)
Regulated
(Note
1.25
Typ
1.3
1.6
0.3
0.3
80
50
50
30
20
96
55
4)
IN
5
2
2
3
5
3
LM2599-XX
= 24V for the 12V ver-
(Note 5)
200/250
350/400
0.7/1.0
Limit
1.21
1.29
0.6
10
10
92
98
2
5
6
mA(max)
mV(max)
µA(max)
µA(max)
µA(max)
µA(max)
(Limits)
%(max)
V(max)
V(max)
V(max)
%(min)
V(min)
V(min)
Units
˚C/W
˚C/W
˚C/W
˚C/W
˚C/W
mA
mV
µA
µA
µA
µA
µA
%
V
V
V
V