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參數(shù)資料
| 型號： | LT1270CT |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 500kHz and 1MHz High Efficiency 1.5A Switching Regulators; Package: SO; No of Pins: 8; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 16 A SWITCHING REGULATOR, 70 kHz SWITCHING FREQ-MAX, PZFM5 |
| 封裝： | PLASTIC, TO-220, 5 PIN |
| 文件頁數(shù)： | 2/4頁 |
| 文件大小： | 179K |
| 代理商： | LT1270CT |
2
LT1270A/LT1270
SYMBOL
V
REF
PARAMETER
Reference Voltage
CONDITIONS
Measured at Feedback Pin
V
C
= 0.8V
V
FB
= V
REF
MIN
1.224
1.214
TYP
1.244
1.244
350
MAX
1.264
1.274
750
1100
6000
7000
350
400
2.30
0.52
0.03
UNITS
V
V
G
I
B
Feedback Input Current
nA
nA
gm
Error Amplifier
Transconductance
Error Amplifier Source of
Sink Current
Error Amplifier Clamp Voltage
l
C
=
±
25
μ
A
3000
2400
150
120
1.80
0.25
4400
μ
mho
μ
mho
G
V
C
= 1.5V
200
μ
A
μ
A
V
V
G
Hi Clamp, V
FB
= 1V
Lo Clamp, V
FB
= 1.5V
3V
≤
V
IN
≤
V
MAX
, V
C
= 0.8V
0.9V
≤
V
C
≤
1.4V
0.38
Reference Voltage Line Regulation
Error Amplifier Voltage Gain
Minimum Input Voltage
Supply Current
Control Pin Threshold
G
%/V
V/V
A
V
500
800
2.8
7
0.90
G
3.0
10
1.08
1.25
0.54
V
I
Q
3V
≤
V
IN
≤
V
MAX
, V
C
= 0.6V
Duty Cycle = 0
mA
0.80
0.60
0.40
V
V
V
G
Normal/Flyback Threshold
on Feedback Pin
Flyback Reference Voltage
0.45
V
FB
I
FB
= 50
μ
A
15.0
14.0
4.5
16.3
17.6
18.0
8.5
V
V
V
G
V
FB
Change in Flyback Reference
Voltage
Flyback Reference Voltage
Line Regulation
Flyback Amplifier
Transconductance (gm)
Flyback Amplifier Source
and Sink Current
Output Switch Breakdown
Voltage
Output Switch ON
Resistance (Note 1, 3)
Control Voltage to Switch
Current Transconductance
0.05
≤
I
FB
≤
1mA
6.8
I
FB
= 50
μ
A
3V
≤
V
IN
≤
V
MAX
l
C
=
±
10
μ
A
0.01
0.03
%/V
150
300
650
μ
mho
V
C
= 0.6V Source
I
FB
= 50
μ
A Sink
3V
≤
V
IN
≤
V
MAX
I
SW
= 5mA
T
J
≤
100
°
C
T
J
≤
125
°
C
G
G
15
25
60
32
40
75
70
70
μ
A
μ
A
V
BV
G
V
SAT
0.12
0.18
0.22
12
A/V
A
U
G
W
A
W
U
W
A
R
BSOLUTE
XI
TI
S
Supply Voltage ....................................................... 30V
Switch Output Voltage ............................................ 60V
Feedback Pin Voltage (Transient, 1ms) ................
±
15V
Operating Junction Temperature Range
LT1270AC/LT1270C (Oper.)................ 0
°
C to 125
°
C
LT1270AC/LT1270C (Short-Ckt) ......... 0
°
C to 140
°
C
Storage Temperature Range................ –65
°
c to 150
°
C
Lead Temperature (Soldering, 10 sec)................ 300
°
C
U
PACKAGE/ORDER U
ORDER PART
NUMBER
LT1270CT
LT1270ACT
T PACKAGE
5-LEAD TO-220
V
IN
V
SW
GND
FB
V
C
FRONT VIEW
5
4
3
2
1
T
JMAX
= 100
°
C,
θ
JA
= 2
°
C/W,
θ
JA
= 50
°
C/W
ELECTRICAL CHARACTERISTICS
V
IN
= 15V, V
C
= 0.5V, V
FB
= V
REF
, switch pin open, unless otherwise noted.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1270CT#33 | 制造商:Linear Technology 功能描述:Q# 39696 |
| LT1270CT#PBF | 功能描述:IC REG MULTI CONFIG 8A TO220-5 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:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LT1270CT06 | 制造商:LT 功能描述:* |
| LT1270CTPBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Up/Down 30V TO220-5 |
| LT1271 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:4A High Efficiency Switching Regulators |
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