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參數資料
| 型號： | MC33364D2 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | 50mA Switched-Cap DC/DC Converter 8-MSOP |
| 中文描述： | SWITCHING CONTROLLER, 800 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, SOP-8 |
| 文件頁數： | 4/16頁 |
| 文件大小： | 170K |
| 代理商： | MC33364D2 |
MC33364
http://onsemi.com
4
PIN DESCRIPTION
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AN1594: Critical Conduction Mode, Flyback Switching Power Supply Using the MC33364.
AN1681: How to keep a Flyback Switch-Mode Power Supply Stable with a Critical-Mode Controller.
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6 (4)
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9 (5)
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10 (5)
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11 (6)
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12 (7)
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8 (NA)
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V
ref
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A GND
P GND
Gate Drive
V
CC
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during the demagnetization phase of the transformer, comparing it to an internal reference. The
ZCD sets the latch for the output driver.
a resistor divider connected to the Voltage Feedback Pin. A 110 mV voltage off-set is applied to
compensate the natural optocoupler saturation voltage.
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3 (2)
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providing bias for the external optocoupler.
The V
ref
Pin is a buffered internal 5.0 V reference with Undervoltage Lockout.
This pin is the ground for the internal circuitry excluding the gate drive stage.
This pin is the ground for the gate drive stage.
The gate drive is the output to drive the gate of the power MOSFET.
Provides the voltage for all internal circuitry including the gate drive stage and V
ref
. This pin has
Current Sense
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The Current Sense Pin monitors the current in the power switch by measuring the voltage across
a resistor. Leading Edge Blanking is utilized to prevent false triggering. The voltage is compared to
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The Voltage Feedback Pin is typically connected to the collector of the optocoupler for feedback
from the isolated secondary output. The Feedback is connected to the V
ref
Pin via a 5 k resistor
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Frequency Clamp
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The Frequency Clamp Pin ensures a minimum off-time value, typically 6.9 s. It prevents the
MOSFET from restarting within a fixed (33364D1) or adjustable (33364D) delay. The minimum
off-time is disabled in the 33364D2. Therefore the maximum switching frequency cannot exceed
1/(T
ON
+ T
OFFmin
).
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current source, eliminating the need for an external startup network.
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The Line Pin provides the initial power to the V
pins. Internally the line pin is a high voltage
MAXIMUM RATINGS
(T
A
= 25
°
C, unless otherwise noted.)
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Voltage Feedback, Restart Delay and Zero Current Input Voltage
in1
-1.0 to +10
V
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Maximum Power Dissipation @ T
A
= 70
°
C
Thermal Resistance, Junction-to-Air
D Suffix, Plastic Package Case 751B-05
Maximum Power Dissipation @ T
A
= 70
°
C
Thermal Resistance, Junction-to-Air
P
D
R
JA
450
178
mW
°
C/W
Power Dissipation and Thermal Characteristics
D1 and D2 Suffix, Plastic Package Case 751
P
D
R
550
145
mW
°
C/W
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Operating Ambient Temperature
T
-25 to +125
°
C
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC33364D2G | 功能描述:電流型 PWM 控制器 Variable Frequency SMPS RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MC33364D2R2 | 功能描述:電流型 PWM 控制器 Variable Frequency RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MC33364D2R2G | 功能描述:電流型 PWM 控制器 Variable Frequency SMPS RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MC33364DG | 功能描述:電流型 PWM 控制器 Variable Frequency SMPS RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MC33364DR2 | 功能描述:電流型 PWM 控制器 Variable Frequency RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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