RP506 系列
2A带同步整流器功能的PWM/VFM降压DC/DC转换器
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概述
The RP506 Series are low supply current CMOS-based PWM/VFM step-down DC/DC converters with synchronous rectifier. RP506 can be selected from two control types by input signal to the MODE pin - forced PWM control or PWM/VFM auto switching control in which mode automatically switches to high-efficiency VFM mode in low output current.
RP506 includes a soft start circuit, an under-voltage lockout circuit (UVLO), thermal shutdown circuit and a latch protection circuit. By simply using an inductor and capacitors (and resistors) as external components, a high-efficiency step-down DC/DC converter can be easily configured. The oscillator frequency can be selected from 1.2MHz, 2.25MHz or 2.3MHz. The soft start time is Typ. 0.15ms, and by connecting an external capacitor to TSS pin, soft start time is adjustable. VOUT/VFB pin voltage is monitored, and the output voltage errors can be output from PG pin. The PG pin is N-channel open drain output type.
RP506 is offered in a DFN(PL)2527-10 package for consumer application and a DFN3030-12 package for industrial and automotive applications.
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规格
消费 工业 车载 输入电压范围 2.5 V to 5.5 V (6.5 V) 工作温度范围 -40°C to 85°C (125°C) -40°C to 105°C (125°C) -40°C to 125°C (150°C)
-40°C to 105°C (150°C)电源电流 Typ. 48 µA(VFM, no load) 待机电流 Typ. 0 µA 输出电压范围 Internally Fixed Ver.: 0.6 V to 3.3 V (0.1 V step)
Externally Adjustable Ver.: 0.6 V to 4.0 VInternally Fixed Ver.: 0.8 V, 1.0 V, 1.1 V, 1.2 V, 1.3 V, 1.5 V, 1.8 V, 1.85 V, 3.0 V, 3.3 V
Externally Adjustable Ver.: 0.6 V to 4.0 VInternally Fixed Ver.: 0.8 V, 1.0 V, 1.1 V, 1.2 V, 1.3 V, 1.5 V, 1.8 V, 1.85 V, 3.0 V, 3.3 V
Externally Adjustable Ver.: 0.6 V to 4.0 V输出电压精度 ±1.5% (VSET ≥ 1.2 V , Ta = 25°C)
±18 mV (VSET < 1.2 V)输出电压温度系数 ±100 ppm/°C 反馈电压精度 ±9 mV (VFB = 0.6 V) 反馈电压温度系数 ±100 ppm/°C 输出电流 2 A 驱动器导通电阻 Pch: Typ. 0.130 Ω, Nch: Typ. 0.125 Ω (VIN = 3.6 V) 振荡器频率 Typ. 2.25 MHz, 1.2 MHz Typ. 2.3 MHz, 1.2 MHz Typ. 2.3 MHz, 1.2 MHz 最大占空比 Min. 100% 封装 DFN(PL)2527-10 DFN3030-12 DFN3030-12 保护回路/功能
TSD ILX OCP OVP UVLO OVLO Reverse Shutdown Soft Start SSCG PGOOD Auto Discharge Anti-ringing Sequencing Max Duty Ext. Phase LED Adjust 
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技术资料
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Typical Application (Fixed Output Voltage Type)
Using Power good function, setting soft- start time for 30ms
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Typical Application (Adjustable Output Voltage Type)
Not using Power good function, setting soft-start time for 0.15ms
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Efficiency vs. Output Current (A/B/C/G/H/N)
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Efficiency vs. Output Current (D/E/F/K/L/M)
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相关信息
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品质&封装
产品名称 对应 封装 标注 信赖性 RP506Kxx1x-TR DFN(PL)2527-10 RP506K RP506K RP506Lxx1x-TR-Y DFN3030-12 RP506L RP506L-Y RP506Lxx1x-TR-K DFN3030-12 RP506L RP506L-K RP506Lxx1x-TR-A DFN3030-12 RP506L RP506L-A - 有关产品的详细信息，请参见数据表。
- 封装文件或数据表包括封装尺寸，卷带规格，卷带盘尺寸，功耗和建议的焊盘图案。
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功能说明
| TSD | 热关断电路 |
|---|---|
| ILX | LX Current Limit Function |
| OCP | 过流保护 |
| OVP | 过压保护 |
| UVLO | 欠压锁定功能 |
| OVLO | Overvoltage Lockout Protection |
| Reverse | 反向电流保护电路 |
| Shutdown | 关机功能 |
| Soft Start | 软启动功能 |
| SSCG | Spread Spectrum Clock Generator Function |
| PGOOD | Power Good Output |
| Auto Discharge | 自动放电功能 |
| Anti-ringing | Anti-ringing Switch Function |
| Sequencing | Start-up Sequencing Control |
| Max Duty | 最大占空比 |
| Ext. Phase | 外部可调相位补偿 |
| LED Adjust | LED High-speed Dimming Control |