DRV3204E-Q1 Datasheet, PDF (25/39 Pages) Texas Instruments – Three-Phase Brushless Motor Driver

DRV3204E-Q1
www.ti.com
SLVSCB5A – OCTOBER 2013 – REVISED JANUARY 2013
Regulators
Description:
The regulator block offers a 5-V LDO and a 3.3-V LDO. The VCC LDO regulates VB down to 5 V with an
external PNP controlled by the regulator block. The 5 V is supplied to MCU and other components.
The VDD regulator regulates VB down to 3.3 V with internal FET and controller. The 5-V LDO is protected
against short to GND fault. Overvoltage and under voltage events of both supplies are detected. The under
voltage of the 5-V LDO is set by SPI.
VB
OC
Current
Limit
VCFB
BG
+
AMP
-
VCCB
VCC
Rsns
PNP Tr
CVCC
* 0.2VáRsns*VCCOC
OV
Superviser
UV
Figure 18. VCC Block Diagram (External Driver)
BG
+
AMP
-
VB
VDD
CVDD
OV
Superviser
UV
Figure 19. VDD Block Diagram
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