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参数资料
| 型号： | LM2576D2TR4-12 |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 稳压器 |
| 英文描述： | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
| 封装： | D2PAK-5 |
| 文件页数： | 23/28页 |
| 文件大小： | 275K |
| 代理商： | LM2576D2TR4-12 |
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LM2576
http://onsemi.com
4
DEVICE PARAMETERS
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Vin = 12 V for the 3.3 V, 5.0 V, and Adjustable version, Vin = 25 V
for the 12 V version, and Vin = 30 V for the 15 V version. ILoad = 500 mA. For typical values TJ = 25°C, for min/max values TJ is the
operating junction temperature range that applies [Note 2], unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
ALL OUTPUT VOLTAGE VERSIONS
Feedback Bias Current (Vout = 5.0 V Adjustable Version Only)
Ib
nA
TJ = 25°C
25
100
TJ = 40 to +125°C
200
Oscillator Frequency Note 3
fosc
kHz
TJ = 25°C
52
TJ = 0 to +125°C
47
58
TJ = 40 to +125°C
42
63
Vsat
V
TJ = 25°C
1.5
1.8
TJ = 40 to +125°C
2.0
Max Duty Cycle (“on”) Note 5
DC
94
98
%
ICL
A
TJ = 25°C
4.2
5.8
6.9
TJ = 40 to +125°C
3.5
7.5
IL
mA
Output = 0 V
0.8
2.0
Output = 1.0 V
6.0
20
Quiescent Current Note 6
IQ
mA
TJ = 25°C
5.0
9.0
TJ = 40 to +125°C
11
Standby Quiescent Current (ON/OFF Pin = 5.0 V (“off”))
Istby
mA
TJ = 25°C
80
200
TJ = 40 to +125°C
400
ON/OFF Pin Logic Input Level (Test Circuit Figure 15)
V
Vout = 0 V
VIH
TJ = 25°C
2.2
1.4
TJ = 40 to +125°C
2.4
Vout = Nominal Output Voltage
VIL
TJ = 25°C
1.2
1.0
TJ = 40 to +125°C
0.8
ON/OFF Pin Input Current (Test Circuit Figure 15)
mA
ON/OFF Pin = 5.0 V (“off”), TJ = 25°C
IIH
15
30
ON/OFF Pin = 0 V (“on”), TJ = 25°C
IIL
0
5.0
3. The oscillator frequency reduces to approximately 18 kHz in the event of an output short or an overload which causes the regulated output
voltage to drop approximately 40% from the nominal output voltage. This self protection feature lowers the average dissipation of the IC by
lowering the minimum duty cycle from 5% down to approximately 2%.
4. Output (Pin 2) sourcing current. No diode, inductor or capacitor connected to output pin.
5. Feedback (Pin 4) removed from output and connected to 0 V.
6. Feedback (Pin 4) removed from output and connected to +12 V for the Adjustable, 3.3 V, and 5.0 V versions, and +25 V for the 12 V and
15 V versions, to force the output transistor “off”.
7. Vin = 40 V.
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| LM2576D2TR4-3.3 | 功能描述:直流/直流开关调节器 3.3V 3A Buck PWM RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| LM2576D2TR4-3.3G | 功能描述:直流/直流开关调节器 3.3V 3A Buck PWM RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| LM2576D2TR4-3.3G-CUT TAPE | 制造商:ON 功能描述:LM2576 Series 40 V 3 A 52 kHz Step-Down Switching Regulator - D2PAK-5 |
| LM2576D2TR4-5G | 功能描述:直流/直流开关调节器 5V 3A Buck PWM RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| LM2576DP-12 | 制造商:HTC 制造商全称:HTC Korea TAEJIN Technology Co. 功能描述:3A, 52kHz, Step-Down Switching Regulator |
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