MAX8900BEWV+T Maxim Integrated Products, MAX8900BEWV+T Datasheet - Page 13

• Manufacturer Part Number: MAX8900BEWV+T
• Description: IC LI-ION/POLY BATT CHRGR 30WLP
• Manufacturer: Maxim Integrated Products

Specifications of MAX8900BEWV+T

• Function: Battery Monitor
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 3.4 V ~ 8.7 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 30-WLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rating and JEITA Battery Temperature Monitoring
A4, B4,
A1, B1
A2, B2
A3, B3
B5, B6
PIN
C1
C2
A5
A6
1.2A Switch-Mode Li+ Chargers with ±22V Input
NAME
STAT2
PGND
CEN
BAT
BST
PVL
CS
LX
Connection to Battery. Connect to a single-cell Li+/Li-Poly battery from BAT to PGND. Connect both
BAT pins together externally. Bypass BAT to PGND with a 2.2FF ceramic capacitor.
40mI Current-Sense Node. Connect the inductor from LX to CS. Connect both CS pins together
externally.
Inductor Switching Node. Connect the inductor between LX and CS. Connect both LX pins together
externally. When enabled (CEN = 0), LX switches between INBP and PGND to control the battery
charging. When disabled (CEN = 1), the LX switches are high-impedance however they still have
body diodes as shown in Figure 3.
Power Ground for Step-Down Low-Side Synchronous n-Channel MOSFET. Connect all PGND pins
together externally.
Supply for High-Side n-Channel Gate Driver. Bypass BST to LX with a 0.1FF ceramic capacitor.
5V Linear Regulator to Power Internal Circuits. PVL also charges the BST capacitor. Bypass PVL to
PGND with a 1.0FF ceramic capacitor. Powering external loads from PVL is not recommended.
Status Output 2. STAT2 is an open-drain output that has a 30V absolute maximum rating and a typical
pulldown resistance of 25I. For the MAX8900A, STAT1 and STAT2 indicate different states as shown
in Table 4. For the MAX8900B/MAX8900C, STAT1, STAT2, and STAT3 indicate different operating
states of the MAX8900_ as shown in Table 3.
Charge Enable Input. CEN has an internal 200kI pulldown resistor. Pull CEN low or leave it
unconnected to enable the MAX8900_. Drive CEN high to disable the MAX8900_. Note: V
greater than V
is low and the MAX8900_ is operating with V
results in a nonoperating condition.
+
STAT2
STAT1
UVLO-RISING
BAT
BAT
DNI
C1
D1
A1
B1
E1
STAT3
SETI
CEN
CS
CS
A2
B2
C2
D2
E2
TOP VIEW (BUMPS DOWN)
for the MAX8900_ to operate when CEN is pulled low. For example, if CEN
(0.4mm PITCH)
INBP
C3
D3
CT
LX
A3
LX
B3
E3
IN
30 WLP
PGND
PGND
INBP
THM
A4
B4
C4
D4
E4
IN
UVLO-FALLING
FUNCTION
PGND
INBP
BST
AVL
C5
D5
A5
B5
IN
E5
PGND
INBP
GND
PVL
A6
B6
C6
D6
E6
IN
< V
IN
< V
UVLO-RISING
Pin Configuration
Pin Description
, then toggling CEN
IN
must be
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