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參數(shù)資料
| 型號： | EL7564CREZ-T7 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Monolithic 4 Amp DC/DC Step-Down Regulator |
| 中文描述： | 5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | ROHS COMPLIANT, MO-153, HTSSOP-28 |
| 文件頁數(shù)： | 5/17頁 |
| 文件大?。?/td> | 644K |
| 代理商： | EL7564CREZ-T7 |
5
FN7297.3
May 9, 2005
Pin Descriptions
20-PIN SO
(0.300”)
28-PIN
HTSSOP
PIN NAME
PIN FUNCTION
1
1
VREF
Bandgap reference bypass capacitor; typically 0.1μF to SGND
2
2
SGND
Control circuit negative supply or signal ground
3
3
COSC
Oscillator timing capacitor (see performance curves)
4
4
VDD
Control circuit positive supply; normally connected to VIN through an RC filter
5
5
VTJ
Junction temperature monitor; connected with 2.2nF to 3.3nF to SGND
6, 7
6, 7, 8, 9
PGND
Ground return of the regulator; connected to the source of the low-side synchronous NMOS
power FET
8
10, 11
VIN
Power supply input of the regulator; connected to the drain of the high-side NMOS power FET
9
13
STP
Auxiliary supply tracking positive input; tied to regulator output to synchronize start up with a
second supply; leave open for stand alone operation; 2μA internal pull down current
10
14
STN
Auxiliary supply tracking negative input; connect to output of a second supply to synchronize
start up; leave open for stand alone operation; 2μA internal pull up current
11, 12, 13
15, 16
PGND
Ground return of the regulator; connected to the source of the low-side synchronous NMOS
power FET
14, 15
18, 19, 20, 21,
22, 23
LX
Inductor drive pin; high current output whose average voltage equals the regulator output
voltage
16
24
VHI
Positive supply of high-side driver; boot strapped from VDRV to LX with an external 0.22μF
capacitor
17
25
VDRV
Positive supply of low-side driver and input voltage for high side boot strap
18
26
PG
Power good window comparator output; logic 1 when regulator output is within ±10% of target
output voltage
19
27
FB
Voltage feedback input; connected to external resistor divider between VOUT and SGND; a
125nA pull-up current forces VOUT to SGND in the event that FB is floating
20
28
EN
Chip enable, active high; a 2μA internal pull up current enables the device if the pin is left open;
a capacitor can be added at this pin to delay the start of converter
Typical Performance Curves
FIGURE 1. EL7564CM EFFICIENCY
FIGURE 2. EL7564CRE EFFICIENCY
V
IN
=5V
100
60
65
70
75
85
95
0
4
3.5
3
2.5
2
1
0.5
1.5
LOAD CURRENT I
O
(A)
E
V
O
=3.3V
V
O
=1.8V
80
90
V
O
=2.8V
V
IN
=5V
100
95
90
85
80
75
70
65
60
0.1
0.6
1.1
1.6
2.1
2.6
3.1
3.6
4.1
I
O
(A)
E
V
O
=3.3V
V
O
=1.8V
V
O
=2.5V
EL7564
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| EL7566AIREZ-T7 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 EL7566AIREZ MONOLITH 7 AMP DC:DC STP-DNGT RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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