米6体育平台手机版

ZHCSMK7C November 2020 – December 2021 TPS2661

PRODUCTION DATA

封装选项

机械数据 (封装 | 引脚)

DDF|8
- MPDS569D

散热焊盘机械数据 (封装 | 引脚)

订购信息

8.4 Device Functional Modes

The device can provide higher current up to 2 × I_OL for short durations. MODE pin of the device configures the behavior of the device for higher current. Table 8-3 and Figure 8-24 describe the device behavior in different modes for I_OL > 0.

With MODE = GND, the device limits the current to I_OL value for I_OUT > I_OL.

With MODE = OPEN, the device limits the output current as:

For I_OL < I_OUT < 2 × I_OL, the device allows current up to 2 × I_OL for a duration of t_{OL_Pulse_Expiry} and then limits the current to I_OL value for a duration t_{OL_Expiry}.
For 2 × I_OL < I_OUT < I_(FASTRIP), the device limits the current 2 × I_OL value and for a duration of t_{OL_Pulse_Expiry} and then limits the current to I_OL value for a duration t_{OL_Expiry}.

After the completion of t_{OL_Expiry} period, the device goes into auto-retry.

With MODE = 180 kΩ, the device limits the output current as:

For I_OL< I_OUT < 2 × I_OL, the device allows current up to 2 × I_OL for a duration of t_{OL_Extend} and then limits the current to I_OL value for a duration t_{OL_Expiry}.
For 2 × I_OL < I_OUT < I_(FASTRIP), the device limits the current 2 × I_OL value and for a duration of t_{OL_Pulse_Expiry} and then limits the current to I_OL value for a duration t_{OL_Expiry}.

After the completion of t_{OL_Expiry} period, the device goes into auto-retry. If the device heats up during overload and the device temperature exceeds T_(TSD) value, the device turns off the internal pass FETs. As the device cools down and its temperature goes below [T_(TSD) – T_(TSDHyst)] value, the device goes into auto-retry.

Table 8-3 Device Operation Under Different MODE Configurations for I_OL > 0

MODE Pin Configuration	I_OUT < I_OL (32 mA)	I_OL (32 mA) < I_OUT < 2 × I_OL (60 mA)	2 × I_OL (60 mA) < I_OUT < I_(FASTRIP)	Auto-Retry Time
Shorted to GND	Current flows normally	Current limited to I_OL for a duration of t_{OL_Expiry} (100 ms). t_{OL_Expiry} (100 ms) timer starts when I_OUT exceeds I_OL.	Current limited to I_OL for a duration of t_{OL_Expiry} (100 ms). t_{OL_Expiry} (100 ms) timer starts when I_OUT exceed I_OL.	t_RETRY1 (800 ms)
Open	Current flows normally	Device allows current for t_{OL_Pulse_Expiry} (50 ms) time after which it is limited to I_OL for t_{OL_Expiry} (100 ms) time and then auto retry. t_{OL_Pulse_Expiry} (50 ms) timer starts when I_OUT exceeds I_OL.	Current limited to 2 × I_OL for t_{OL_Pulse_Expiry} (50 ms) time after which it is limited to I_OL for t_{OL_Expiry} (100 ms) time and then auto retry. t_{OL_Pulse_Expiry} (50 ms) timer starts when I_OUT exceeds I_OL.	t_RETRY1 (800 ms)
180 kΩ from MODE to GND	Current flows normally	Device allows current for t_{OL_Extend} (5 s) time after which it is limited to I_OL for t_{OL_Expiry} (100 ms) time and then auto retry. t_{OL_Extend} (5 s) timer starts when I_OUT exceeds I_OL.	Current limited to 2 × I_OL for t_{OL_Pulse_Expiry} (50 ms) time after which it is limited to I_OL for t_{OL_Expiry} (100 ms) time and then auto retry. t_{OL_Pulse_Expiry} (50ms) timer starts when I_OUT exceeds I_OL.	t_RETRY2 (1.6 s)

Figure 8-24 Device Operation Under Different MODE Configurations for I_OL > 0

Table 8-4 and Figure 8-25 describe the device behavior in different modes for I_OL < 0.

Table 8-4 Device Operation Under Different MODE Configurations for I_OL < 0

MODE Pin Configuration	I_OUT > –I_OL (–32 mA)	–2 × I_OL(–60 mA) < I_OUT < –I_OL (–32 mA)	–I_(FASTRIP) < I_OUT < –2 × I_OL (–60 mA)	Auto-Retry Time
Shorted to GND or Open or 180 kΩ from MODE to GND	Current flows normally	Current limited to I_OL for a duration of t_{OL_Expiry} (100 ms). t_{OL_Expiry} (100 ms) timer starts when I_OUT exceeds I_OL.	Current limited to I_OL for a duration of t_{OL_Expiry} (100ms). t_{OL_Expiry} (100ms) timer starts when I_OUT exceed I_OL.	t_RETRY1 (800 ms)

Figure 8-25 Device Operation Under Different MODE Configurations for I_OL < 0