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參數資料
| 型號： | MC34025 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | 5-V Battery-Backup Supervisors for RAM Retention 8-MSOP -40 to 125 |
| 中文描述： | 高速雙端PWM控制器 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 516K |
| 代理商： | MC34025 |
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SO–16L)
P SUFFIX
PLASTIC PACKAGE
CASE 648
PIN CONNECTIONS
16
1
16
1
11
5
2
1
Error Amp
Noninverting Input
Error Amp Output
Current Limit/
Shutdown
Ground
Output A
Power Ground
VC
Output B
VCC
Vref
9
10
12
13
14
15
16
8
7
6
4
3
(Top View)
Soft–Start
Ramp
CT
RT
Clock
Error Amp
Inverting Input
Device
Operating
Temperature Range
Package
ORDERING INFORMATION
MC33025DW
MC34025P
TA = 0
°
to +70
°
C
SO–16L
Plastic DIP
TA = –40
°
to +105
°
C
MC33025P
Plastic DIP
MC34025DW
SO–16L
Order this document by MC34025/D
1
MOTOROLA ANALOG IC DEVICE DATA
The MC34025 series are high speed, fixed frequency, double–ended
pulse width modulator controllers optimized for high frequency operation.
They are specifically designed for Off–Line and DC–to–DC converter
applications offering the designer a cost effective solution with minimal
external components. These integrated circuits feature an oscillator, a
temperature compensated reference, a wide bandwidth error amplifier, a
high speed current sensing comparator, steering flip–flop, and dual high
current totem pole outputs ideally suited for driving power MOSFETs.
Also included are protective features consisting of input and reference
undervoltage lockouts each with hysteresis, cycle–by–cycle current limiting,
and a latch for single pulse metering.
The flexibility of this series allows it to be easily configured for either
current mode or voltage mode control.
50 ns Propagation Delay to Outputs
Dual High Current Totem Pole Outputs
Wide Bandwidth Error Amplifier
Fully–Latched Logic with Double Pulse Suppression
Latching PWM for Cycle–By–Cycle Current Limiting
Soft–Start Control with Latched Overcurrent Reset
Input Undervoltage Lockout with Hysteresis
Low Start–Up Current (500
μ
A Typ)
Internally Trimmed Reference with Undervoltage Lockout
90% Maximum Duty Cycle (Externally Adjustable)
Precision Trimmed Oscillator
Voltage or Current Mode Operation to 1.0 MHz
Functionally Similar to the UC3825
Simplified Application
Error
Amp
Oscillator
4
16
Vref
Clock
5
6
7
RT
CT
3
Ramp
Error Amp
Output
Noninverting
2
Inverting
Input 1
8
Soft–Start
Soft–Star
t
Latching
PWM and
Steering
Flip Flop
Ground
10
9
Current
Limit/
Shutdown
Output B
14
VC
13
VCC
15
UVLO
5.1V
Reference
11
Input
Power
Ground
12
Output A
This device contains 227 active transistors.
Motorola, Inc. 1996
Rev 1
相關PDF資料 |
PDF描述 |
|---|---|
| MC34025DW | High Speed Double-Ended PWM Controller |
| MC34025P | Battery-Backup Supervisors for RAM Retention 8-MSOP -40 to 85 |
| MC33025 | High Speed Double-Ended PWM Controller |
| MC33025DW | High Speed Double-Ended PWM Controller |
| MC33025P | High Speed Double-Ended PWM Controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC34025_05 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:High Speed Double−Ended PWM Controller |
| MC34025_12 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:High Speed Double-Ended PWM Controller |
| MC34025DW | 功能描述:電流型 PWM 控制器 Dual Output Voltage 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 |
| MC34025DWG | 功能描述:電流型 PWM 控制器 Dual Output Voltage or Current Mode PWM 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 |
| MC34025DWR2 | 功能描述:電流型 PWM 控制器 Dual Output Voltage 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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