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參數(shù)資料
| 型號： | AN8018SA |
| 廠商： | PANASONIC CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.8-volt 2-channel step-up, step-down, or inverting DC-DC converter control IC |
| 中文描述： | 0.05 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 0.225 INCH, 0.65 MM PITCH, PLASTIC, SSOP-16 |
| 文件頁數(shù)： | 15/26頁 |
| 文件大?。?/td> | 268K |
| 代理商： | AN8018SA |
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15
Voltage Regulators
AN8018SA
I
Application Notes (continued)
[5] About logic of PWM block
The logic for channel 1 and channel 2 of this IC is reversed. Thereby an input current flatness is realized. At the
same time, noise can be suppressed to a lower level by staggering the turn on timing.
The PWM1 block turns on the output transistor during the period when the triangular wave of the OSC terminal
(pin 1) is lower than both of the FB1 (pin 5) terminal voltage and the DT1 (pin 6) terminal voltage.
The PWM2 block turns on the output transistor during the period when the triangular wave of OSC terminal
(pin 1) is higher than both of the FB2 (pin 13) terminal voltage and the DT2 (pin 12) terminal voltage.
(Refer to figure 4.)
FB1
FB2
OSC
Channel 1
Switching transistor
emitter current I
E1
Channel 2
Switching transistor
collector current I
C2
I
E1
+
I
C2
Out1
(Open-collector output)
Out2
(Totem pole output)
V
IN
I
C2
SBD
+
I
E1
SBD
O
1
O
Figure 4. PWM logic explanation chart
DT1 and DT2
are omitted
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| AN8018SA-E1 | 功能描述:IC REG CTRLR BST INV PWM 16-SSOP RoHS:否 類別: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:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| AN8018SA-E1V | 功能描述:IC REG CTRLR BST INV PWM 16-SSOP RoHS:否 類別: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 升壓:無 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 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)品目錄頁面:1316 (CN2011-ZH PDF) |
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