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DLPA2000 Datasheet(PDF) 23 Page - Texas Instruments

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Part # DLPA2000
Description  Power Management and LED/Lamp Driver IC
PDF  58 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

DLPA2000 Datasheet(HTML) 23 Page - Texas Instruments

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From light sensor
From host
From temperature sensor
To host
SW4
SW5
SENS1
VINA/3
VLED/3
SENS2
CMP_OUT
PWM_IN
AFE_SEL[3:0]
AFE_GAIN [1:0]
AFE
MUX
DLPA2000
www.ti.com
DLPS043A – JUNE 2014 – REVISED AUGUST 2015
Figure 10. Block Diagram of the Measurement System
Table 5. Recommended Configuration of the AFE for Different Input Selections
RECOMMENDED GAIN SETTING
RECOMMENDED SETTING OF
AFE_SEL[3:0]
SELECTED INPUT
AFE-GAIN[1:0]
AFE_CAL_DIS BIT
0x00h
SENS2
0x01h (1x)
Setting has no effect on measurement
0x01h
VLED
0x01h (1x)
Setting has no effect on measurement
0x02h
VINA
0x01h (1x)
Setting has no effect on measurement
0x03h
SENS1
0x01h (1x)
Setting has no effect on measurement
Set to 1 if sense voltage is >100 mV.
0x04h
RLIM_K
0x03h (18x)
Otherwise set to 0 (default)
Set to 1 if sense voltage is >200 mV.
0x05h
SW4
0x02h (9.5x)
Otherwise set to 0 (default)
Set to 1 if sense voltage is >200 mV.
0x06h
SW5
0x02h (9.5x)
Otherwise set to 0 (default)
Set to 1 if sense voltage is >200 mV.
0x07h
SW6
0x02h (9.5x)
Otherwise set to 0 (default)
0x08h
No connect
N/A
N/A
0x09h
VREF
0x01h (1x)
Setting has no effect on measurement
7.3.10 Protection Circuits
DLPA2000 has several protection circuits to protect the IC and system from damage due to excessive power
consumption, die temperature, or over-voltages. These circuits are described in the following sections.
7.3.10.1 Thermal Warning (HOT) and Thermal Shutdown (TSD)
DLPA2000 continuously monitors the junction temperature and issues a HOT interrupt if temperature exceeds
the HOT threshold. If the temperature continues to increase above the thermal shutdown threshold, all rails are
disabled and the TSD bit in the INT register is set. After the temperature drops below its threshold, the system
recovers and waits for the DPP to resend the DMD_EN bit.
Copyright © 2014–2015, Texas Instruments Incorporated
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Product Folder Links: DLPA2000



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