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DA9021 Datasheet(PDF) 39 Page - Dialog Semiconductor

No. de pieza DA9021
Descripción Electrónicos  System PMIC with high efficiency USB power manager
PDF  142 Pages
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Fabricante Electrónico  DIALOG [Dialog Semiconductor]
Página de inicio  http://www.dialog-semiconductor.com/
Logo DIALOG - Dialog Semiconductor

DA9021 Datasheet(HTML) 39 Page - Dialog Semiconductor

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DA9021/22
System PMIC with high efficiency USB power manager
Datasheet
Revision 2.5
17-Feb-2017
CFR0011-120-00 Rev 5
39 of 142
© 2017 Dialog Semiconductor
8.9.4
Charger detection circuit
Table 28: Charger detection circuit
Supply mode
Symbol
Test conditions
Min
Typ
Max
Unit
Charger detect threshold
VCH_DET
4.25
4.35
4.4
V
Charger current limit reduction
threshold
VCHG_THR
(configurable)
3.7
3.8
4.35
V
Charger insertion debounce time
VCHG_INS_DEB
10
ms
VBUS, excess voltage threshold
VCHG_EXCESS
5.5
5.6
5.8
V
8.9.5
VBUS charge control
Table 29: VBUS charge control
Supply mode
Symbol
Test conditions
Min
Typ
Max
Unit
VBUS load in low
power SUSPEND
mode
IVBUS_SUSPEND
0
V ≤ VBUS ≤ 5.25 V
TAVG = <1 s, no spikes higher
than 100 mA
500
µA
8.9.6
Charge timer
Table 30: Charge timer
Supply
mode
Symbol
Test conditions
Min
Typ
Max
Unit
Total
charging
timer
setting
TCTR
Total charge time is defined as the total charge time
from when the charger was enabled (both for LINEAR
and PRE-CHARGE mode charging). If the timer
expires, the CHG_TO flag is set in the EVENT register,
an IRQ issued and the charging is disabled. The
default TCTR setting is 0x0A. Setting the TCTR to
0x00 disables the timer.
0
30
450
min
Read back
of current
timer value
CHG_TIME
This register can be used to read back the current
value of the charge time counter, counting down from
the value loaded by the TCTR
0
2
510
min
8.9.7
DCCC and active-diode
Table 31: DCCC and active-diode
Supply mode
Symbol
Test conditions
Min
Typ
Max
Unit
Active diode on resistance
RON
VBAT=3.6 V I=500 mA
incl pin and routing
0.14
Ω
Circuit activation voltage
VBAT - VDDOUT
10
20
40
mV
Maximum diode current
IDMAX
2.2
A



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