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MAX20303 Datasheet(PDF) 39 Page - Maxim Integrated Products

Part # MAX20303
Description  Wearable Power Management Solution
PDF  152 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX20303 Datasheet(HTML) 39 Page - Maxim Integrated Products

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VBAT = +3.7V, CSFOUT = 1µF, CVDIG = 1µF, CCAP = 1µF, CSYS = 10µF, CBK1OUT_EFF = 15µF, CBK2OUT_EFF = 10µF, CL1IN = 22µF,
CL2IN = 22µF, CL1OUT_EFF = 15µF, CL2OUT_EFF = 10µF, CCPP = 27nF, CBSTOUT_EFF = 10µF, CBBOUT_EFF = 10µF, LBK1 = 2.2µH,
LBK2 = 2.2µH, LBSTOUT = 4.7µH, LBBOUT = 4.7µH, TA = +25°C, unless otherwise noted.
Typical Operating Characteristics (continued)
50mV/div
(AC-
COUPLED)
50mA/div
toc32
20ms/div
LDO1LOADTRANSIENT
VOUTN
VINSIDE
VBACKUP
VL1OUT
IL1OUT
LDO1VSet = 1V
50mV/div
(AC-
COUPLED)
50mA/div
toc34
20ms/div
LDO2LOADTRANSIENT
VOUTN
VINSIDE
VBACKUP
VL2OUT
IL2OUT
LDO2VSet = 3V
2.985
2.99
2.995
3
3.005
3.01
3.015
0
20
40
60
80
100
IL2OUT (mA)
LDO2LOADREGULATION
toc33
VSYS = 3.3V
VSYS = 3.7V
VSYS = 4.2V
LDO2VSet = 3V
0
100
200
300
400
500
600
700
800
-25
-15
-5
5
15
25
INITIAL GUESS ERROR (%)
TIMETORESONANCELOCKvs. INITIALGUESSERROR
(ESTIMATEDBYVIBRATIONAMPLITUDE)
toc35
EmfSkipCyc = 0x01,
WidLpGain = 0x04
EmfSkipCyc = 0x00,
WidLpGain = 0x03
EmfSkipCyc = 0x00,
WidLpGain = 0x02
LRA = Samsung DMJBRN1030BK
500mV/div
(AC-
COUPLED)
2V/div
toc36
100ms/div
HAPTICDRIVERLRASELFTUNING
IniGssCLOSETORESONANTFREQUENCY
VOUTN
VINSIDE
VBACKUP
VIBRATION AMPLITUDE
DRP
FREQUENCY = 211.8Hz
IniGss = 200Hz
toc37
40ms/div
HAPTICDRIVERLRASELFTUNING
ERRORINIniGssRESONANCESETTING
VOUTN
VINSIDE
VBACKUP
ERROR = -10%
ERROR = 3%
ERROR = 0%
ERROR = 3%
ERROR = 10%
NarLpGain = 0x02
WidLpGain = 0x04
EmfSkipCyc = 0x01
LRA VIBRATION
AMPLITUDE
Maxim Integrated │ 39
www.maximintegrated.com
MAX20303
Wearable Power Management Solution



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