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NPM1100-CAAA-R7 bảng dữ liệu(PDF) 39 Page - Nordic Semiconductor

tên linh kiện NPM1100-CAAA-R7
Giải thích chi tiết về linh kiện  nPM1100
PDF  58 Pages
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nhà sản xuất  NORDIC [Nordic Semiconductor]
Trang chủ  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

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7 Application
The following application example uses nPM1100 and an nRF5x wireless System on Chip (SoC). Any nRF52
or nRF53 series device with USB can be configured in the same way as this application. When using a
device without USB, or for other configurations, see Reference circuitry on page 44.
The example application is for a design with the following configuration and features:
• nPM1100 BUCK regulator supplies the nRF5x device
• USB current limit negotiation
• Charging status monitoring using SoC GPIOs
• ICHG and VTERM configuration
• NTC thermistor in the battery pack
• Ship mode
• Battery monitoring circuit and low battery indication LED (this requires the device to sample the
battery voltage; software is not described here)
7.1 Schematic
U
S
B
J2
USB
P0.xx
nRF5x
VDD
D-
VDDH
VBUS
D+
VSS
P0.xx
P0.xx
P0.xx
P0.xx
P0.xx
P0.xx
P0.xx
U2
nRF5x
BAT_MON
R5
220k
R4
1M5
Q1A
DMC2400UV
Q1B
DMC2400UV
R3
1M0
R2
1M0
BAT_MON_EN
LD3
L0603R
LOW_BATT
R6
150R
Q2
FDV303N
R7
1M0
VBUS
B1
VSYS
C2
VSYS
C1
VOUTBSET1
B3
D+
A2
nPM1100
VBUS
B2
CHG
E4
VBAT
D1
VBAT
D2
PVSS
A5
SW
A4
AVSS
C5
NTC
E1
ICHG
E2
ISET
D5
VTERM
C3
D-
A1
DEC
A3
VOUTB
B5
ERR
E3
VOUTBSET0
B4
AVSS
C4
MODE
E5
SHPACT
D4
SHPHLD
D3
U1
nPM1100-CAAA
L1
2.2µH
C2
10µF
PVSS
VDD_nRF
C4
10µF
R_ICHG
1k5
C3
10µF
VSYS
PVSS
PVSS
VBUS
C1
2.2µF
D_N
D_P
SHPACT
R1
100k
TP1
MODE
SW1
PB SW
ISET
ERR
CHG
SHPHLD
+
J1
Battery pack
VBAT
Battery monitoring circuit
Low battery indication
(optional)
(optional)
VSYS
Figure 34: Application example
7.2 Supplying from BUCK
nRF5x is supplied by nPM1100
VOUTB at 1.8 V. BUCK mode (MODE) is controlled via a GPIO.
4445_367 v1.0
39



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