RT1650WSC datasheet(16/26 Pages) RICHTEK

16 / 26 page

RT1650

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

DS1650-00

July

2015

Memory) is primarily used to save non-volatile user

setting data and part of MTP store internal factory

setting. User firmware can control some of chip

hardware behavior via peripheral registers. It also could

be an interface to communicate with external I2C via

the registers.

ROM / OTP

32 KB

Peripheral

SRAM

1 KB

MTP

272B

0x0000_0000

0x0000_7FFF

0x2000_0000

0x2000_03FF

0x4000_0000

0x4000_01FF

0x5000_0000

0x5000_1FFF

reserved

Code

SRAM

Peripheral

Figure 3. Memory Map

Programmable Dynamic Rectifier Voltage Control

The RT1650 provides a programmable Dynamic

Rectifier Voltage Control function to optimize the

transient

response

and

power

efficiency

for

applications. Table 1 and Figure 4 show an example to

summarize how the rectifier behavior is dynamically

adjusted based the registers VRECT_SETx[7:0] (x = 1 to

4), which are available to be programmed by users.

Table 1. Dynamic Rectifier Voltage Setting

Output Current, IOUT

Rectifier Voltage Target

< IOUT_TH1

VRECT_SET1

IOUT_TH1 to IOUT_TH2

VRECT_SET2

IOUT_TH2 to IOUT_TH3

VRECT_SET3

> IOUT_TH3

VRECT_SET4

VRECT_SET1

UVLO

If Ext. Charger w/ DPM

(ex. VDPM = 4.9V)

VRECT Tracking Stop Above

UVLO

I (A)

VOUT

VRECT

Dynamic Operation

Area

Overloading

Operation Area

OTP Triggered

IOUT_TH1

IOUT_LIMIT

VRECT_SET2

VRECT_SET3

VRECT_SET4

IOUT_TH2

IOUT_TH3

Figure 4. Dynamic Rectifier Voltage vs. Output Current

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