NCP1835MN24T2G ON Semiconductor, NCP1835MN24T2G Datasheet - Page 10

• Manufacturer Part Number: NCP1835MN24T2G
• Description: IC BATT CHRGR LIION 4.242V 10DFN
• Manufacturer: ON Semiconductor
• Type: Battery Chargerr

Specifications of NCP1835MN24T2G

• Function: Charge Management
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 2.8 V ~ 6.5 V
• Operating Temperature: -20°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 10-VFDFN Exposed Pad
• Output Current: 1A
• Output Voltage: 4.2V
• Operating Supply Voltage (min): 2.8V
• Operating Supply Voltage (max): 6.5V
• Operating Temp Range: -20C to 70C
• Package Type: DFN
• Mounting: Surface Mount
• Pin Count: 10
• Operating Temperature Classification: Commercial
• Product: Charge Management
• Operating Supply Voltage: 2.8 V to 6.5 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 20 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: NCP1835MN24T2G; NCP1835MN24T2GOSTR

Charge Status Indicator (CFLG)
charging or End−of−Charge (EOC) status. It is pulled low
when charging in constant current mode and constant
voltage mode. It will be forced to a high impedance state
when the charge current drops to I
is in shutdown mode, CFLG will also stay in the high
impedance state.
Fault Indicator (FAULT)
charge fault has occurred. It has two states: low or high
impedance. In a normal charge cycle, it stays in a high
impedance state. At fault conditions, it will be pulled low
and terminate the charge cycle. A timeout fault occurs
when the full charge or pre−charge timeouts are violated,
or if the voltage on ISEL is greater than 1.4 V or lower than
0.35 V. There are two ways to get the charger out of a fault
condition and back to a normal charge cycle. One can either
toggle the EN pin from GND to a floating state or reset the
input power supply.
Adapter Present Indicator (V2P8)
the input voltage, V
(V
battery voltage, it provides a 2.8 V reference voltage that
can source up to 2.0 mA. This voltage can also be used to
power a microprocessor I/O.
CFLG is an open−drain output that indicates battery
FAULT is an open−drain output that indicates that a
V2P8 is an input power supply presence indicator. When
RISE
, nominally 3.4 V) and is also 100 mV above the
CC
, is above the power on threshold
EOC
. When the charger
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10
Enable/Disable (EN)
shutdown mode, the internal reference, oscillator, and
control circuits are all turned off. This reduces the battery
drain current to less than 3.0 mA and the input supply
current to 30 mA. Floating the EN pin enables the charger.
Thermal Foldback
programmed charge current proportionally if the die
temperature rises above the preset thermal limit (nominally
100°C). This feature provides the charger protection from
over heating or thermal damage. Figure 16 shows the full
charge current reduction due to die temperature increase
across the thermal foldback limit. For a charger with a
1.0 A constant charge current, the charge current starts
decreasing when the die temperature hits 100°C and is
reduced to zero when the die temperature rises to 110°C.
Pulling the EN pin to GND disables the NCP1835. In
An internal thermal foldback loop reduces the
Figure 16. Full Charge Current vs. Junction
T
I
FCHG
J
, JUNCTION TEMPERATURE
Temperature
100°C
X−100 mA/C