ST7538P013TR STMicroelectronics, ST7538P013TR Datasheet - Page 25
![IC TXRX FSK POWER LINE 44TQFP](/photos/6/84/68458/497-44-tqfp_44-lqfp_sml.jpg)
ST7538P013TR
Manufacturer Part Number
ST7538P013TR
Description
IC TXRX FSK POWER LINE 44TQFP
Manufacturer
STMicroelectronics
Type
Transceiverr
Datasheet
1.ST7538P013TR.pdf
(30 pages)
Specifications of ST7538P013TR
Number Of Drivers/receivers
1/1
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Surface Mount
Package / Case
44-TQFP Exposed Pad, 44-eTQFP, 44-HTQFP, 44-VQFP
For Use With
497-5484 - BOARD EVAL ST7538 PWR LINE TXRX
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Protocol
-
Other names
497-4316-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ST7538P013TR
Manufacturer:
NXP
Quantity:
67 000
Company:
Part Number:
ST7538P013TR
Manufacturer:
STMicroelectronics
Quantity:
10 000
4.9 5V Voltage Regulator and Power Good Function
ST7538 has an embedded 5V linear regulator externally available to supply the application circuitry.
The linear regulator has a very low quiescent current (50µA) and a current capability of 100mA. The reg-
ulator is protected against short circuitry events.
When the regulator Voltage is above the power good threshold (V
while is forced low at startup and when VDC falls below V
Figure 24. Power Good Function
4.10 Power-Up Procedure
To ensure ST7538 proper power-Up sequence, PAVcc, AVss and DVss Supply has to fulfil the following
rules:
1) PAVcc rising slope must not exceed 100V/ms.
2) When DVdd and AVdd are below 5V (externally supplied): 100mV < PAVcc-AVdd , PAVcc-DVdd < 1.2V.
When AVdd and DVdd supply are connected to VDC, with load < 100mA and filtering capacitor on VDC
< 100uF, the second rule can be ignored.
Figure 25. Power-UP Sequence
PAVcc-DVdd
PAVcc-AVdd
Voltage
5V
V
PG
DC
4.5V
100V/ms
PG OK
PG
D03IN1411
- V
DVdd, AVdd
PGHYS
250mV
PAVcc
PG)
Time
Time
D03IN1424
, Power Good line is forced high,
Voltage.
Time
ST7538
25/30