參數(shù)資料
型號(hào)： LT1507IS8
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 3 A SWITCHING REGULATOR, 570 kHz SWITCHING FREQ-MAX, PDSO8
封裝： 0.150 INCH, PLASTIC, SO-8
文件頁(yè)數(shù)： 3/20頁(yè)
文件大?。?/td> 343K
代理商： LT1507IS8
3
LT1507
ELECTRICAL CHARACTERISTICS
T
J
= 25
°
C, V
IN
= 5V, V
C
= 1.5V, boost open, switch open unless otherwise specified.
PARAMETER
Switch Frequency
CONDITIONS
V
C
Set to Give 50% Duty Cycle
–25
°
C
≤
T
J
≤
125
°
C
T
J
≤
–25
°
C
4.3V
≤
V
IN
≤
15V
f = 10kHz
MIN
460
440
440
TYP
500
MAX
540
560
570
0.15
1.3
4.3
3.5
22
25
35
40
5.4
50
75
2.46
0.70
0.70
2.2
1000
UNITS
kHz
kHz
kHz
%/V
Switch Frequency Line Regulation
Frequency Shifting Threshold on F
B
Pin
Minimum Input Voltage (Note 2)
Minimum Boost Voltage (Note 3)
Boost Current (Note 4)
G
0.05
1.0
4
3
12
G
0.8
V
V
V
G
I
SW
≤
1.5A
V
BOOST
= V
IN
+ 5V
G
I
SW
= 500mA, –25
°
C
≤
T
J
≤
125
°
C
T
J
≤
–25
°
C
I
SW
= 1.5A,
–25
°
C
≤
T
J
≤
125
°
C
T
J
≤
–25
°
C
mA
mA
mA
mA
mA
μ
A
μ
A
25
Input Supply Current (Note 5)
Shutdown Supply Current
G
3.8
15
V
SHDN
= 0V, V
IN
≤
12V
V
SW
= 0V, V
C
Open
V
C
Open
V
C
Open
G
Lockout Threshold
Shutdown Threshold
G
2.3
0.15
0.25
2.38
0.37
0.45
1.5
V
V
V
V
Device Shutting Down
Device Starting Up
G
G
Minimum Synchronizing Amplitude
Synchronizing Frequency Range (Note 7)
G
580
kHz
The
G
denotes specifications which apply over the operating temperature
range.
Note 1:
Gain is measured with a V
C
swing equal to 200mV above the low
clamp level to 200mV below the upper clamp level.
Note 2:
Minimum input voltage is not measured directly, but is guaranteed
by other tests. It is defined as the voltage where internal bias lines are still
regulated, so that the reference voltage and oscillator frequency remain
constant. Actual minimum input voltage to maintain a regulated output will
depend on output voltage and load current. See Applications Information.
Note 3:
This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
Note 4:
Boost current is the current flowing into the BOOST pin with the
pin held 5V above input voltage. It flows only during switch ON time.
Note 5:
Input supply current is the bias current drawn by the V
IN
pin when
the SHDN pin is held at 1V (switching disabled).
Note 6:
Switch ON resistance is calculated by dividing V
IN
to V
SW
voltage
by the forced current (1.5A). See Typical Performance Characteristics for
the graph of switch voltage at other currents.
Note 7:
For synchronizing frequency above 700kHz, with duty cycles
above 50%, external slope compensation may be needed. See Applications
Information.
Note 8:
Transconductance and voltage gain refer to the internal amplifier
exclusive of the voltage divider. To calculate gain and transconductance
refer to SENSE pin on fixed voltage parts. Divide values shown by the ratio
V
OUT
/2.42.
V
C
Pin Shutdown Threshold
JUNCTION TEMPERATURE (
°
C)
–50
2.44
2.43
2.42
2.41
2.40
100
LT1507 TPC03
–25
0
25
50
75
125
F
C
μ
A
2.0
1.5
1.0
0.5
0
VOLTAGE
CURRENT
LOAD CURRENT (A)
0
E
100
90
80
70
60
50
1.00
LT1507 TA02
0.25
0.50
0.75
1.25
V
IN
V
OUT
= 3.3V
Switch Peak Current Limit
Feedback Pin Voltage and Current
JUNCTION TEMPERATURE (
°
C)
–50
1.4
1.2
1.0
0.8
0.6
0.4
100
LT1507 TPC01
–25
0
25
50
75
125
T
TYPICAL PERFOR
M
A
N
CE CHARACTERISTICS
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LT1507IS8#PBF 功能描述:IC REG BUCK ADJ 1.5A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開(kāi)關(guān):- 電流 - 輸出:100mA 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:SOT-23-5 細(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT
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LT1507IS8#TRPBF 功能描述:IC REG BUCK ADJ 1.5A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開(kāi)關(guān):- 電流 - 輸出:100mA 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:SOT-23-5 細(xì)型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT
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