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參數資料
| 型號： | IRU1260CP |
| 廠商： | International Rectifier |
| 英文描述： | DUAL 6A AND 1A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR |
| 中文描述： | 雙6A和1A低壓差型正，可調式穩(wěn)壓器 |
| 文件頁數： | 3/12頁 |
| 文件大?。?/td> | 76K |
| 代理商： | IRU1260CP |
IRU1260
3
Rev. 2.1
09/19/02
www.irf.com
BLOCK DIAGRAM
Figure 2 - Simplified block diagram of the IRU1260.
The control input pin of the regulator. This pin via a 10
resistor is connected to the 5V
supply to provide the base current for the pass transistor of both regulators. This allows
the regulator to have very low dropout voltage which allows one to generate a well regu-
lated 2.5V supply from the 3.3V input. A high frequency, 1
μ
F capacitor is connected
between this pin and V
IN
pin to insure stability.
A resistor divider from this pin to V
OUT
1 pin and ground sets the output voltage. See
application circuit for the divider setting for 2.5V output.
A resistor divider from this pin to the V
OUT
2 pin and ground sets the output voltage. See
application circuit for the divider setting for 1.5V output.
This pin is connected to ground. It is also the tab of the package.
The output #2 (high current) of the regulator. A minimum of 100
μ
F capacitor must be
connected from this pin to ground to insure stability.
The power input pin of the regulator. Typically a large storage capacitor is connected from
this pin to ground to insure that the input voltage does not sag below the minimum dropout
voltage during the load transient response. This pin must always be higher than both V
OUT
pins by the amount of the dropout voltage in order for the device to regulate properly.(See
data sheet)
The output #1 (low current) of the regulator. A minimum of 100
μ
F capacitor must be
connected from this pin to ground to insure stability.
PIN # PIN SYMBOL
PIN DESCRIPTION
PIN DESCRIPTIONS
1
2
3
4
5
6
7
V
CTRL
V
FB
1
V
FB
2
Gnd
V
OUT
2
V
IN
V
OUT
1
V
CTRL
V
IN
Gnd
6
4
5
V
OUT
2
7 V
OUT
1
THERMAL
SHUTDOWN
1.20V
2
V
FB
1
3
V
FB
2
+
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