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參數(shù)資料
| 型號： | AN8011S |
| 廠商： | PANASONIC CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2-channel step-down, step-up, or inverting use DC-DC converter control IC |
| 中文描述： | SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 0.225 INCH, PLASTIC, SOP-16 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 161K |
| 代理商： | AN8011S |
10
AN8011S
Voltage Regulators
I
Application Notes (continued)
[2] Function descriptions
1. Reference voltage block
This block is composed of the band gap circuit, and outputs the temperature compensated 2.5 V reference
voltage to the V
REF
terminal. The reference voltage is stabilized when the supply voltage is 3.6 V or higher, and
used as the operating power supply for the IC inside. It is possible to take out a load current of up to
3 mA. Also,
an overcurrent portection circuit is built in for the load, thereby protecting the IC from destruction when V
REF
terminal is short circuited.
2. Triangular wave oscillation block
The triangular wave which swings from the wave peak of approximately 1.4 V to the wave bottom of
approximately 0.4 V will be generated by connecting a timing capacitor and a resistor to the CT terminal and RT
terminal respectively. The oscillation frequency can be freely decided by the value of C
T
and R
T
connected
externally. The triagular wave is connected with the inverted input of PWM comparator of the IC inside.
3. Error amplifier block
This block detects the output voltage of DC-DC conveter, and inputs the signal amplified by the PNP transistor
input type differential amplifier to the PWM comparator.
The common-mode input voltage range is
0.1 V to 0.8 V, and is a voltage obtained by dividing the reference
voltage with resistors.
Also, it is possible to perform the gain setting and the phase compensation arbitrarily by connecting the
feedback resistor and the capacitor from the error amplifier output terminal to the inverted input terminal.
The output voltage V
OUT
, if positive, is obtained by connecting the resistor-divided reference voltage to the
noninverted input terminal as shown in figure 1. 1), and the output voltage V
OUT
, if negative, is obtained by
connecting to the inverted input terminal as shown in figure 1. 2). The output voltages in each of these cases are
given in the following equations.
V
OUT1
=
V
IN
×
R1
+
R2
R2
R1
+
R2
R2
V
OUT1
V
REF
16
V
OUT1
=
(V
REF
V
IN-1
)
×
R3
+
R4
+
V
REF
R3
V
IN
+
=
V
REF
×
V
IN
1
=
V
REF
×
R2
R1
+
R2
PWM comparator
input
PWM comparator
input
Error amp.1
Error amp.1
R1
R3
IN
+
IN
1
R2
R4
1) Positive output
FB1
R
NF
C
NF
2) Negative output
Figure 1. Connection method of error amplifier 1
14
13
12
V
OUT1
R1
R3
IN
+
IN
1
R2
R4
FB1
V
REF
R
NF
C
NF
16
14
13
12
The output voltage of channel 2 V
OUT2
is
exclusively for positive voltage ouput, and
method of connection is as shown in figure 2.
V
OUT2
=
0.75
×
R1
+
R2
R2
PWM comparator input
Figure 2. Cnnection method of error amplifier 2
V
OUT2
R1
R3
R2
R4
0.75V
Error amp.2
IN
2
FB2
V
REF
: 2.5 V
R
N
C
N
5
4
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AN8011S-E1V | 功能描述:IC REG BUCK BST INV 2.5V DL SO16 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:- 產(chǎn)品培訓(xùn)模塊:High Efficiency Current Mode Switching Regulators CMOS LDO Regulators 特色產(chǎn)品:BD91x Series Step-Down Regulators 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:兩者兼有 輸出數(shù):2 輸出電壓:3.3V，0.8 V ~ 2.5 V 輸入電壓:4.5 V ~ 5.5 V PWM 型:電流模式 頻率 - 開關(guān):1MHz 電流 - 輸出:1.5A 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:20-VFQFN 裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:VQFN020V4040 產(chǎn)品目錄頁面:1373 (CN2011-ZH PDF) 其它名稱:BD9152MUV-E2TR |
| AN8013 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| AN8013D1 | 制造商:AN# - MILITARY 功能描述: |
| AN8013SH | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:Single-channel step-up or step-down DC-DC converter control IC |
| AN8013SH-E1 | 功能描述:IC REG BUCK BST ADJ 0.1A 10SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 產(chǎn)品培訓(xùn)模塊:High Efficiency Current Mode Switching Regulators CMOS LDO Regulators 特色產(chǎn)品:BD91x Series Step-Down Regulators 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:兩者兼有 輸出數(shù):2 輸出電壓:3.3V，0.8 V ~ 2.5 V 輸入電壓:4.5 V ~ 5.5 V PWM 型:電流模式 頻率 - 開關(guān):1MHz 電流 - 輸出:1.5A 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:20-VFQFN 裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:VQFN020V4040 產(chǎn)品目錄頁面:1373 (CN2011-ZH PDF) 其它名稱:BD9152MUV-E2TR |
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