150KHz, 3A PWM Buck DC/DC Converter
Features动物大会
- Output voltage: 3.3V, 5V, 12V and adjustable output version
- Adjustable version output voltage range, 1.23V to 18V+4%
- 150KHz +15% fixed switching frequency
- Voltage mode non-synchronous PWM control - Thermal-shutdown and current-limit protection - ON /OFF shutdown control input - Operating voltage can be up to 22V - Output load current: 3A - TO252-5L packages
- Low power standby mode
金五行的字- Built-in switching transistor on chip
Applications
饥荒猪王- Simple High-efficiency step-down regulator - On-card switching regulators - Positive to negative converter
General Description
The AP1507 ries are monolithic IC designed for a step-down DC/DC converter, and own the ability of driving a 3A load without external transistor. Due to reducing the number of external component, the board space can be saved easily. The external shutdown function can be controlled by logic level
and then come into standby mode. The internal compensation makes feedback control have good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. If current limit function occurred and V FB is down to 0.5V below, the switching frequency will be reduced. The AP1507 ries operates at a switching frequency of 150KHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% on the oscillator frequency. The output version included fixed 3.3V, 5V, 12V, and an adjustable type. The package is available in a 5-lead TO-252.
Pin Assignments
( Top View )
TO252-5L
IN
Pin Descriptions
老鼠进书箱150KHz, 3A PWM Buck DC/DC Converter
Ordering Information
ranged
D5: TO252-5L Blank : Tube
A : Taping
Blank : Adjustable -33 : 3.3V -50 : 5.0V -12 : 12V
Blank : Normal L : Lead Free Package
Block Diagram
Gnd
Output V IN
SD
FB
150KHz, 3A PWM Buck DC/DC Converter
丝瓜是黄瓜吗
Absolute Maximum Ratings
Electrical Characteristics (All Output Voltage Versions)
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150KHz, 3A PWM Buck DC/DC Converter
Electrical Characteristics (Continued)
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150KHz, 3A PWM Buck DC/DC Converter
Typical Performance Characteristics
AP1507 Efficiency v.s. Temperature
(Vin=12V,Vout=5V,Io=3A)
AP1507 Efficiency v.s. Temperature
(Vin=12V,Vout=3.3V,Io=3A)
AP1507 Saturation Voltage v.s. Temperature
(Vcc=12V,Vfb=0V,VSD=0)
AP1507 Switch Current Limit v.s. Temperature
活动形式怎么写(Vcc=12V,Vfb=0V)
AP1507 Supply Current v.s. Temperature蜗牛赛跑
(Vcc=12V , No Load ,Von/off =0V(Switch ON) ,Von/off =5V(Switch OFF))
