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參數(shù)資料
| 型號(hào)： | AN8013SH |
| 廠商： | PANASONIC CORP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | Single-channel step-up or step-down DC-DC converter control IC |
| 中文描述： | 0.1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | SSOP-10 |
| 文件頁(yè)數(shù)： | 8/15頁(yè) |
| 文件大?。?/td> | 125K |
| 代理商： | AN8013SH |
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AN8013SH
Voltage Regulators
8
I
Application Notes
[2] Function descriptions
1. Reference voltage block
The reference voltage block is based on a band gap circuit, and outputs a temperature corrected reference
voltage of 2.5 V. This reference voltage is stabilized once the supply voltage exceeds 3.6 V, and is used as the
power supply for the IC itself.
2. Triangular wave generator
This circuit generates a triangular wave with a peak of about 1.45 V and a trough of about 0.35 V using a timing
capacitor connected to the CT pin (pin 3) and a timing resistor connected to the RT pin (pin 2) respectively. The
oscillator frequency can be set to arbitrary value by selecting appropriate values for the external capacitor and
resistor, C
T
and R
T
. The triangular wave signal is provided to the inverting input the PWM comparator internally
to the IC.
3. Error amplifier
This circuit is an PNP-transistor input error ampli-
fier that detects and amplifies the DC-DC converter
output voltage, and inputs that signal to a PWM com-
parator.
A 0.75 V level is created by resistors dividing the
internal reference voltage. This level is applied to the
noninverting input.
Arbitrary gain and phase compensation can be set
up by inserting a resistor and capacitor in series
between the error amplifier output pin (pin 6) and the
inverting input pin (pin 7).
The output voltage V
OUT
is given by the following
formula by connecting a resistor divider to the output
as shown in figure 1.
R1
+
R2
R
2
4. Timer latch short-circuit protection circuit
This circuit protects the external main switching element, flywheel diode, choke coil, and other components
against degradation or destruction if an excessive load or a short circuit of the power supply output continues for
longer than a certain fixed period.
The timer latch short-circuit protection circuit detects the output of the error amplifier. If the DC-DC converter
output voltage drops and an error amplifier output level exceeds 1.90 V, this circuit outputs a low level and the
timer circuit starts. This starts charging the external protection circuit delay time capacitor.
If the error amplifier output does not return to the normal voltage range before that capacitor reaches 0.75 V,
the latch circuit latches, the output drive transistors are turned off, and the dead-time is set to 100%.
V
OUT
= 0.75
×
5. Low input voltage malfunction prevention circuit (U.V.L.O.)
This circuit protects the system against degradation or destruction due to incorrect control operation when the
power supply voltage falls during power on or power off.
The low input voltage malfunction prevention circuit detects the internal reference voltage that changes with
the supply voltage level. While the supply voltage is rising, this circuit cuts off the output drive transistor until the
reference voltage reaches 3.1 V. It also sets the dead-time to 100%, and at the same time holds the S.C.P. pin (pin
4) at the low level. During the fall time of the power supply voltage, it has hysteresis width of 200 mV and operates
2.9 V or less.
V
OUT
Error amp.
R1
R3
R4
R2
R
N
PWM
comparator
input
0.75 V
Internal 2.5 V
reference voltage
C
N
IN
FB
Figure 1. Connection method of error amplifier
6
7
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相關(guān)代理商/技術(shù)參數(shù) |
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| AN8013SH-E1 | 功能描述:IC REG BUCK BST ADJ 0.1A 10SSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)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(lèi)型:降壓（降壓） 輸出類(lèi)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(kāi)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(lèi)型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤(pán) 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:VQFN020V4040 產(chǎn)品目錄頁(yè)面:1373 (CN2011-ZH PDF) 其它名稱(chēng):BD9152MUV-E2TR |
| AN8013SH-E1V | 功能描述:IC REG BUCK BST ADJ 0.1A 10SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)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(lèi)型:降壓（降壓） 輸出類(lèi)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(kāi)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(lèi)型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤(pán) 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:VQFN020V4040 產(chǎn)品目錄頁(yè)面:1373 (CN2011-ZH PDF) 其它名稱(chēng):BD9152MUV-E2TR |
| AN8014 | 制造商:PANASONIC 制造商全稱(chēng):Panasonic Semiconductor 功能描述:Step-down, step-up, or inverting DC-DC converter control IC |
| AN8014S | 制造商:PANASONIC 制造商全稱(chēng):Panasonic Semiconductor 功能描述:Step-down, step-up, or inverting DC-DC converter control IC |
| AN8014S-E1 | 功能描述:IC REG CTRLR BST INV PWM SO16 RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:100% 電源電壓:8.2 V ~ 30 V 降壓:無(wú) 升壓:無(wú) 回掃:是 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:是 工作溫度:0°C ~ 70°C 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 產(chǎn)品目錄頁(yè)面:1316 (CN2011-ZH PDF) |
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