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FAN54015 数据表(PDF) 3 Page - Fairchild Semiconductor

部件名 FAN54015
功能描述  USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

FAN54015 数据表(HTML) 3 Page - Fairchild Semiconductor

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© 2012 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN54015 • Rev. 1.0.0
3
Pin Configuration
Top View
Bottom View
Figure
3. WLCSP-20 Pin Assignments
Pin Definitions
Pin #
Name
Description
A1, A2
VBUS
Charger Input Voltage
and USB-OTG output voltage. Bypass with a 1
F capacitor to PGND.
A3
NC
No Connect
. No external connection is made between this pin and the IC’s internal circuitry.
A4
SCL
I
2C Interface Serial Clock. This pin should not be left floating.
B1-B3
PMID
Power Input Voltage
. Power input to the charger regulator, bypass point for the input current sense,
and high-voltage input switch. Bypass with a minimum of 4.7
F, 6.3 V capacitor to PGND.
B4
SDA
I
2C Interface Serial Data. This pin should not be left floating.
C1-C3
SW
Switching Node
. Connect to output inductor.
C4
STAT
Status
. Open-drain output indicating charge status. The IC pulls this pin LOW when charging.
D1-D3
PGND
Power Ground
. Power return for gate drive and power transistors. The connection from this pin to the
bottom of CMID should be as short as possible.
D4
OTG
On-The-Go
. Enables boost regulator in conjunction with OTG_EN and OTG_PL bits (see Table 16). On
VBUS Power-On Reset (POR), this pin sets the input current limit for t15MIN charging.
E1
CSIN
Current-Sense Input
. Connect to the sense resistor in series with the battery. The IC uses this node to
sense current into the battery. Bypass this pin with a 0.1
F capacitor to PGND.
E2
DISABLE
Charge Disable
. If this pin is HIGH, charging is disabled. When LOW, charging is controlled by the I
2C
registers. When this pin is HIGH, the 15-minute timer is reset. This pin does not affect the 32-second
timer.
E3
VREG
Regulator Output
. Connect to a 1
F capacitor to PGND. This pin can supply up to 2mA of DC load
current. The output voltage is PMID, which is limited to 1.8 V.
E4
VBAT
Battery Voltage
. Connect to the positive (+) terminal of the battery pack. Bypass with a 0.1
F
capacitor to PGND if the battery is connected through long leads.
C1
B1
A1
A2
C3
B3
A3
C2
D1
D3
D2
B2
C4
B4
A4
D4
E1
E3
E2
E4
C1
B1
A1
C3
B3
A3
A2
C2
D1
D3
D2
B2
C4
B4
A4
D4
E1
E3
E2
E4


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