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TCC-202A-RT Datasheet(PDF) 7 Page - ON Semiconductor

Part # TCC-202A-RT
Description  Two-Output PTIC Control IC
Download  23 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

TCC-202A-RT Datasheet(HTML) 7 Page - ON Semiconductor

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TCC−202
www.onsemi.com
7
AVDD Power−On Reset (POR)
Upon application of AVDD the TCC−202 will be in
shutdown mode. All circuit blocks are off and the chip draws
only minimal leakage current.
VIO Power−On Reset and Startup Conditions
A high level on VIO places the chip in startup mode which
provides a POR to the TCC−202. POR resets all registers to
their default settings as described in Table 8. VIO POR also
resets the serial interface circuitry. POR is not a brown−out
detector and VIO needs to be brought back to a low level to
enable the POR to trigger again.
Table 7. VIO POWER−ON RESET AND STARTUP
Register
Default State for
VIO POR
Comment
DAC Boost
[1011]
VHV = 24 V
Power Mode
[01]>[00]
Transitions from shutdown to startup and then automatically to active mode
DAC Enable
[000000]
VOUT A, B Disabled
DAC A
Output in High−Z Mode
DAC B
Output in High−Z Mode
VIO Shutdown
A low level at any time on VIO places the chip in shutdown mode in which all circuit blocks are off. The contents of the
registers are not maintained in shutdown mode.
Table 8. VIO THRESHOLDS (AVDD from 2.3 V to 5.5 V; TA = –30 to +85°C unless otherwise specified)
Parameter
Description
Min
Typ
Max
Unit
Comments
VIORST
VIO Low Threshold
0.2
V
When VIO is lowered below this threshold level the
chip is reset and placed into the shutdown state
Power Supply Sequencing
The AVDD input is typically directly supplied from the battery and thus is the first on. After AVDD is applied and before VIO
is applied to the chip, all circuits are in the shutdown state and draw minimum leakage currents. Upon application of VIO, the
chip automatically starts up using default settings and is placed in the active state waiting for a command via the serial interface.
Table 9. TIMING (AVDD from 2.3 V to 5.5 V; VIO from 1.62 V to 1.98 V; TA = –30 to +85°C; OUT A and OUT B; CHV = 47 nF; LBOOST
= 15
mH; VHV = 24 V; Turbo−Charge mode off unless otherwise specified; VDDA = 1.7 V)
Parameter
Description
Min
Typ
Max
Unit
Comments
TPOR_VREG
Internal bias settling time from shutdown to active mode
50
120
ms
For info only
TBOOST_START
Time to charge CHV @ 80% of set VHV
(set to 24 V, VDDA = 2.7 V)
130
ms
For info only
TSD_TO_ACT
Startup time from shutdown to active mode
180
300
ms
TSET+
Output A, B positive settling time to within 5% of the
delta voltage, equivalent series load of 5.6 k
W and 2.7
nF, VOUT from 2 V to 20 V; 0Bh (11d) to 55h (85d)
50
60
ms
Voltage settling time
connected on VOUT
A, B
TSET−
Output A, B negative settling time to within 5% of the
delta voltage, equivalent series load of 5.6 k
W and 2.7
nF, VOUT from 20 V to 2 V; 55h (85d) to 0Bh (11d)
50
60
ms
Voltage settling time
connected on VOUT
A, B
TSET+
Output A, B positive settling time with Turbo
35
ms
Voltage settling time
connected on VOUT
A, B
TSET−
Output A, B negative settling time with Turbo
35
ms
Voltage settling time
connected on VOUT
A, B


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