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參數(shù)資料
| 型號(hào)： | LM2575HVS-ADJ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SIMPLE SWITCHER 1A Step-Down Voltage Regulator |
| 中文描述： | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
| 封裝： | PLASTIC, TO-263, 5 PIN |
| 文件頁數(shù)： | 5/12頁 |
| 文件大小： | 195K |
| 代理商： | LM2575HVS-ADJ |
www.ti.com
Electrical Characteristics
I
LOAD
= 200 mA, V
IN
= 12 V for 3.3-V, 5-V, and adjustable versions, V
IN
= 25 V for 12-V version, V
IN
= 30 V for 15-V version
(unless otherwise noted) (see
Figure 2
)
LM2575
1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATOR
SLVS569D–JANUARY 2005–REVISED JULY 2005
PARAMETER
TEST CONDITIONS
V
IN
= 12 V, I
LOAD
= 0.2 A
T
J
MIN
3.234
3.168
3.135
4.9
4.8
4.75
11.76
11.52
11.4
14.7
14.4
14.25
TYP
3.3
3.3
MAX
3.366
3.432
3.465
5.1
5.2
5.25
12.24
12.48
12.6
15.3
15.6
15.75
UNIT
25
°
C
25
°
C
LM2575-33
4.75 V
≤
V
IN
≤
40 V,
0.2 A
≤
I
LOAD
≤
1 A
Full range
25
°
C
25
°
C
Full range
25
°
C
25
°
C
Full range
25
°
C
25
°
C
Full range
V
IN
= 12 V, I
LOAD
= 0.2 A
5
5
LM2575-05
8 V
≤
V
IN
≤
40 V,
0.2 A
≤
I
LOAD
≤
1 A
V
OUT
Output voltage
V
V
IN
= 25 V, I
LOAD
= 0.2 A
12
12
LM2575-12
15 V
≤
V
IN
≤
40 V,
0.2 A
≤
I
LOAD
≤
1 A
V
IN
= 30 V, I
LOAD
= 0.2 A
15
15
15
LM2575-15
18 V
≤
V
IN
≤
40 V,
0.2 A
≤
I
LOAD
≤
1 A
V
IN
= 12 V, V
OUT
= 5 V,
I
LOAD
= 0.2 A
25
°
C
1.217
1.23
1.243
Feedback voltage
LM2575-ADJ
V
25
°
C
1.193
1.18
1.23
1.267
1.28
8 V
≤
V
IN
≤
40 V, V
OUT
= 5 V,
0.2 A
≤
I
LOAD
≤
1 A
Full range
LM2575-33
LM2575-05
LM2575-12
LM2575-15
V
IN
= 12 V, I
LOAD
= 1 A
V
IN
= 12 V, I
LOAD
= 1 A
V
IN
= 15 V, I
LOAD
= 1 A
V
IN
= 18 V, I
LOAD
= 1 A
V
IN
= 12 V, V
OUT
= 5 V,
I
LOAD
= 1 A
75
77
88
88
η
Efficiency
25
°
C
%
LM2575-ADJ
77
25
°
C
50
100
500
58
63
1.2
1.4
I
IB
Feedback bias current
V
OUT
= 5 V (ADJ version only)
nA
Full range
25
°
C
Full range
25
°
C
Full range
25
°
C
25
°
C
Full range
47
42
52
f
o
Oscillator frequency
(1)
kHz
0.9
V
SAT
Saturation voltage
I
OUT
= 1 A
(2)
V
Maximum duty cycle
(3)
93
1.7
1.3
98
2.8
%
3.6
I
CL
Peak current
(1)(2)
A
4
2
V
IN
= 40
(4)
, Output = 0 V
V
IN
= 40
(4)
, Output = –1 V
(4)
I
L
Output leakage current
25
°
C
mA
7.5
30
10
I
Q
I
STBY
Quiescent current
Standby quiescent current
25
°
C
25
°
C
25
°
C
5
mA
μ
A
OFF (ON/OFF pin = 5 V)
50
1.4
200
2.2
2.4
V
IH
OFF (V
OUT
= 0 V)
Full range
25
°
C
Full range
ON/OFF logic input level
V
1.2
1
V
IL
ON (V
OUT
= nominal voltage)
0.8
30
10
I
IH
I
IL
OFF (ON/OFF pin = 5 V)
OFF (ON/OFF pin = 0 V)
12
0
ON/OFF input current
25
°
C
μ
A
(1)
In the event of an output short or an overload condition, self-protection features lower the oscillator frequency to
～
18 kHz and the
minimum duty cycle from 5% to
～
2%. The resulting output voltage drops to
～
40% of its nominal value, causing the average power
dissipated by the IC to lower.
Output is not connected to diode, inductor, or capacitor. Output is sourcing current.
Feedback is disconnected from output and connected to 0 V.
To force the output transistor off, FEEDBACK is disconnected from output and connected to 12 V for the adjustable, 3.3-V, and 5-V
versions; and 25 V for the 12-V and 15-V versions.
(2)
(3)
(4)
5
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| LM2575HVS-ADJ/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1A STEP-DOWN VLTG REG RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(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 |
| LM2575HVS-ADJEP | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER 1A Step-Down Voltage Regulator |
| LM2575HVSX-12 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| LM2575HVSX-12/NOPB | 功能描述:IC REG BUCK 12V 1A TO263-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:SIMPLE SWITCHER® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3.3V 輸入電壓:4.5 V ~ 24 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:125mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 包裝:Digi-Reel® 供應(yīng)商設(shè)備封裝:SOT-6 其它名稱:MAX1836EUT33#TG16DKR |
| LM2575HVSX-15 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(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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