參數(shù)資料
型號: US1260
廠商: Unisem Group
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(diào)式穩(wěn)壓器
文件頁數(shù): 3/9頁
文件大小: 67K
代理商: US1260
US1260
3-3
Rev. 1.9
3/22/99
BLOCK DIAGRAM
Figure 1 - Simplified block diagram of the US1260
PIN DESCRIPTIONS
PIN #
3
PIN SYMBOL
Vfb2
voltage. See application ckt for the divider setting for 1.5V output.
Vfb1
A resistor divider from this pin to Vout #1 pin and ground sets the output
voltage.See application ckt for the divider setting for 2.5V output.
Vout2
The output #2 (high current) of the regulator. A minimum of 100uF capacitor
must be connected from this pin to ground to insure stability.
Vout1
The output #1 (low current) of the regulator. A minimum of 100uF capacitor
must be connected from this pin to ground to insure stability.
Vin
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 drop out voltage during the load transient response. This
pin must always be higher than both Vout pins by the amount of the dropout
voltage(see datasheet) in order for the device to regulate properly.
Gnd
This pin is connected to GND. It is also the TAB of the package.
Vctrl
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 regulated 2.5V supply from the 3.3V input.
A high frequency, 1 uF capacitor is connected between this pin and Vin pin to
insure stability.
PIN DESCRIPTION
A resistor divider from this pin to the Vout #2 pin and ground sets the output
2
5
7
6
4
1
Vctrl
Vin
Gnd
6
1
4
1260blk1-1.1
5
Vout2
7 Vout1
THERMAL
SHUTDOWN
1.20V
2
Vfb1
3
Vfb2
+
相關(guān)PDF資料
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US1260CM DUAL 6A AND 1A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
US1260CP DUAL 6A AND 1A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
US1260CM 制造商:UNISEM 制造商全稱:UNISEM 功能描述:DUAL 6A AND 1A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
US1260CP 制造商:UNISEM 制造商全稱:UNISEM 功能描述:DUAL 6A AND 1A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
US1260CT 制造商:UNISEM 制造商全稱:UNISEM 功能描述:DUAL 6A AND 1A LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR
US1261 制造商:UNISEM 制造商全稱:UNISEM 功能描述:DUAL 6A AND 1A LOW DROPOUT POSITIVE FIXED OUTPUT REGULATOR
US1261CM 制造商:UNISEM 制造商全稱:UNISEM 功能描述:DUAL 6A AND 1A LOW DROPOUT POSITIVE FIXED OUTPUT REGULATOR