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UC3825
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所属类别:ACDC-和-DCDC-电源
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产品名称:高速 PWM 控制器
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厂商:TI
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生产批号:09+
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封装:16PDIP, 16SOIC, 20PLCC
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库存状态:有库存
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库存量:4000
- 最低订购量:1
- 详细资料:
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The PWM control IC UC1825 series is best suited for high frequencies for switching power supply applications. Special attention is given to minimize the propagation delay of the amplifier logic circuit by comparing and maximizing the bandwidth and slew rate of errors. The controller is designed for voltage mode systems that feed forward with either current mode or input voltage.
The protection circuitry includes a 1V threshold current-limited comparator compatible with the TTL shut-off port and soft-start pins, which will double the maximum duty cycle clamping. The logic is to completely lock the free operation of providing jitter and prohibit multiple pulses from being output. The 800mV hysteresis undervoltage lockout section ensures low start-up current.
characteristic
- Suitable for voltage or current mode topologies
- The actual operating switching frequency is 1MHz
- 50ns propagation delay to output
- High current dual totem (1.5A peak) pole output
- Wideband error amplifier
- Fully locked logic dual-pulse suppression
- The pulse is limited by the pulse current
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Soft start/max. Duty cycle control
- Undervoltage lockout and hysteresis
- Low starting current (1.1 milliampere)
parameter
|
|
|
UC3825 |
topology |
|
|
Boost, buck, reverse, forward, full-bridge, half-bridge, push-pull |
Control method |
|
|
Current mode, voltage mode |
Duty Cycle (Max) (%) |
|
|
50 |
Frequency (max) (kHz) |
|
|
1000 |
On/off of undervoltage lockout threshold (5) |
|
|
9.2/8.4 |
Pin/Pack |
|
|
16PDIP,20PLCC,16SOIC |
(#) Regulated output |
|
|
2 |
Operating Temperature Range (°C) |
|
|
0 to 70 |
The ICs associated with the UC3825 include:
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illustrate |
382575-2 |
TYCO |
10+ |
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TI |
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M38257M8-053FP |
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00+ |
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UC |
93+ |
DIP-16 |
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UC3825ADW |
UNITRODE |
99+ |
SMD |
New original stock available |
SG3825 |
LINFINITY |
00+ |
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UC |
06+ |
PLCC-20 |
|
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TI |
09+ |
16PDIP, 16SOIC |
High-speed PWM controller |
UC3825A |
TI |
08+ |
16PDIP, 16SOIC, 20PLCC |
High-speed PWM controller |
UC3825 |
TI |
09+ |
16PDIP, 16SOIC, 20PLCC |
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TI |
07+ |
SOP |
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TI |
10+ |
SOT23-5 |
Processor monitoring circuit |
TPS3825-33-Q1 |
TI |
07+ |
SOP |
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TPS3825-33 |
TI |
10+ |
SOT-153 |
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UC3825DW |
TI |
0710+ |
HTSSOP16 |
|
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