bd71850mwv-凯发k8一触即发
nxp i.mx 8m nano family用电源管理ic
bd71850mwv
bd71850mwv是运用罗姆此前积累的处理器用电源技术，集成了i.mx 8m nano family处理器所需的电源和功能的pmic。内置适用于i.mx 8m nano family的电源on/off时序器，不仅可以实现小型化，还容易进行应用设计，有助于大幅削减开发周期。
集成了控制逻辑、降压dc/dc转换器（buck converter）6ch、ldo6ch，只需1枚芯片，即可向处理器，以及应用所需的ddr存储器供电。而且内置sdxc卡用1.8v/3.3v开关、32.768khz晶体振荡器的缓存、各种保护功能（各电源系统的输出短路、输出过电压、输出过电流和热关断）。配备高功率转换效率为95%的降压dc/dc转换器，可在1节li-ion电池到usb的大输入电压范围（2.7v~5.5v）内工作，是适合i.mx 8m nano famil适用领域的pmic。
购买
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* 本产品是标准级的产品。
本产品不建议使用于车载设备。
本产品不建议使用于车载设备。
主要规格
特性：
channel(dcdc)[ch]
6
sw frequency(max.)[mhz]
2
channel(ldo)[ch]
6
operating temperature (min.)[°c]
-40
operating temperature (max.)[°c]
105
package size [mm]
7x7 (t=1)
特点：
- 6 buck regulators
- 2.0 mhz switching frequency. (buck1, buck2, buck5, buck7, and buck8).
- 1.5mhz switching frequency. (buck6)
- target efficiency: 83% to 95%.
- output current & voltage.
buck1: 3.0 a, 0.7 v to 1.3 v/10 mv step, dvs
buck2: 3.0 a, 0.7 v to 1.3 v/10 mv step, dvs
buck5: 3.0 a, 0.70 v to 1.35 v/8steps, dvs
buck6: 3.0 a, 2.6 v to 3.3 v/100 mv step
buck7: 1.5 a, 1.605 v to 1.995 v/8steps
buck8: 3.0 a, 0.8 v to 1.4 v/10 mv step - 6ch linear regulators (6 ldos)
- ldo1: 10 ma, 3.0 v to 3.3 v, 1.6 v to 1.9 v
- ldo2: 10 ma, 0.9 v, 0.8 v
- ldo3: 300 ma, 1.8 v to 3.3 v
- ldo4: 250 ma, 0.9 v to 1.8 v
- ldo5: 300 ma, 0.8 v to 3.3 v
- ldo6: 300 ma, 0.9 v to 1.8 v
- power mux switch
- 1.8v input: 500 mω(max)
- 3.3v input: 500 mω(max)
- 32.768 khz crystal oscillator driver
- power button detector
- protection and monitoring: soft start, power rails fault detection, uvlo, ovp and tsd
- otp configurable power sequencing
- otp and software programmable output voltage, ramp rates.
- hardware signaling with soc for transition into or out of low power states
- interfaces:
- i²c: 100 khz/400 khz, 1 mhz
- power-on reset output: por_b, rtc_reset_b,
- watchdog reset input: wdog_b:
- power state control: pmic_stby_req, pmic_on_req, pwron_b
- interrupt to soc: irq_b
- type3 pcb applicable
