參數(shù)資料
型號(hào)： LM2599-3.3MWC
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： 7.5 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC
封裝： WAFER
文件頁(yè)數(shù)： 31/36頁(yè)
文件大小： 897K
代理商： LM2599-3.3MWC
All Output Voltage Versions
Electrical Characteristics (Continued)
Specifications with standard type face are for T
J = 25C, and those with boldface type apply over full Operating Tempera-
ture Range. Unless otherwise specified, V
IN = 12V for the 3.3V, 5V, and Adjustable version and VIN = 24V for the 12V ver-
sion. I
LOAD = 500 mA
Symbol
Parameter
Conditions
LM2599-XX
Units
(Limits)
Typ
Limit
(Note
4)
(Note 5)
DEVICE PARAMETERS
I
Q
Operating Quiescent
SD /SS Pin Open (Note 10)
5mA
Current
10
mA(max)
I
STBY
Standby Quiescent
SD /SS pin = 0V
(Note 11)
80
A
Current
200/250
A(max)
θ
JC
Thermal Resistance
TO220 or TO263 Package, Junction to Case
2
θ
JA
TO220 Package, Juncton to Ambient (Note 12)
50
C/W
θ
JA
TO263 Package, Juncton to Ambient (Note 13)
50
C/W
θ
JA
TO263 Package, Juncton to Ambient (Note 14)
30
C/W
θ
JA
TO263 Package, Juncton to Ambient (Note 15)
20
C/W
SHUTDOWN/SOFT-START CONTROL Test Circuit of
Figure 1
V
SD
Shutdown Threshold
1.3
V
Voltage
Low, (Shutdown Mode)
0.6
V(max)
High, (Soft-start Mode)
2
V(min)
V
SS
Soft-start Voltage
V
OUT = 20% of Nominal Output Voltage
2
V
OUT = 100% of Nominal Output Voltage
3
I
SD
Shutdown Current
V
SHUTDOWN = 0.5V
5A
10
A(max)
I
SS
Soft-start Current
V
Soft-start = 2.5V
1.6
A
5
A(max)
FLAG/DELAY CONTROL Test Circuit of
Figure 1
Regulator Dropout Detector
Low (Flag ON)
96
%
Threshold Voltage
92
%(min)
98
%(max)
VF
SAT
Flag Output Saturation
I
SINK = 3 mA
0.3
V
Voltage
V
DELAY = 0.5V
0.7/1.0
V(max)
IF
L
Flag Output Leakage Current
V
FLAG = 40V
0.3
A
Delay Pin Threshold
1.25
V
Voltage
Low (Flag ON)
1.21
V(min)
High (Flag OFF) and V
OUT Regulated
1.29
V(max)
Delay Pin Source Current
V
DELAY = 0.5V
3
A
6
A(max)
Delay Pin Saturation
Low (Flag ON)
55
mV
350/400
mV(max)
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 25C 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.
LM2599
www.national.com
4
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LM2599S-12/NOPB 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
LM2599S-3.3 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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LM2599S-5.0 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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