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PDF MCP73830 Data sheet ( Hoja de datos )
| Número de pieza | MCP73830 | |
| Descripción | Single-Cell Li-Ion/Li-Polymer Battery Charge Management Controllers | |
| Fabricantes | Microchip | |
| Logotipo |  |
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MCP73830/L
Single-Cell Li-Ion/Li-Polymer Battery Charge Management
Controllers in 2x2 TDFN
Features:
• Complete Linear Charge Management Controller:
- Integrated Pass Transistor
- Integrated Current Sense
- Integrated Reverse Discharge Protection
• Constant Current/Constant Voltage Operation
• High Accuracy Preset Voltage Regulation:
– 4.20V + 0.75%
• Programmable Charge Current:
– MCP73830L: 20 mA – 200 mA
– MCP73830: 100 mA – 1000 mA
• Soft-Start to avoid In-Rush Current
• Preconditioning:
– 10% and no preconditioning
• Fixed Elapsed Timer: 4 Hours
• Fixed Preconditioning Timer: 1 Hour
• Automatic Recharge: No Auto-Recharge is also
available with Selected Options
• Automatic End-of-Charge Control Termination:
– 7.5% and 10%
• Automatic Power-Down when Input Power
Removed
• Undervoltage Lockout (UVLO)
• Chip/Charge Enable Pin (CE)
• Packaging:
– TDFN-6 (2x2 mm)
• Temperature Range: -40°C to +85°C
Applications:
• Bluetooth Headsets
• Portable Media Players
• Rechargeable 3D Glasses
• Toy and Gaming Controllers
Description:
The MCP73830/L are highly integrated, Li-Ion battery
charge management controllers for use in space-
limited applications. The MCP73830/L devices provide
specific charge algorithms for single-cell Li-Ion/Li-
Polymer batteries to achieve optimal capacity and
safety in the shortest charging time possible. Along
with its small physical size, the low number of external
components makes the MCP73830/L ideally suitable
for portable applications.
The MCP73830L employs a constant current/constant
voltage charge algorithm. The minimum 20 mA
regulated constant, fast-charge current enables the
design in small Li-Ion batteries and low-supply current
applications. The fast-charge, constant current value is
set with one external resistor from 20 mA to 200 mA.
The MCP73830/L allows up to 1000 mA charge current
for applications that require faster constant current.
The MCP73830/L provides a thermal foldback function
that limits the charge current based on die temperature
during high-power or high-ambient conditions. This
thermal regulation optimizes the charge cycle time
while maintaining device reliability.
The MCP73830/L is fully specified over the ambient
temperature range of -40°C to +85°C. The
MCP73830/L is available in a 6 lead, TDFN package.
Package Types (Top View)
MCP73830/L
2x2 TDFN *
VSS 1
6 PROG
STAT 2
EP
7
5 CE
VBAT 3
4 VDD
* Includes Exposed Thermal Pad (EP); see Table 3-1.
TABLE 1: AVAILABLE FACTORY PRESET OPTIONS
Charge Voltage
Preconditioning Charge Current End-of-Charge Control
4.2V
10%/Disabled
7.5%/ 10%
Auto-Recharge
Yes/No
2011-2014 Microchip Technology Inc.
DS20005049D-page 1
1 page  
MCP73830/L
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [VREG(Typical) + 0.3V] to 6V,
TA = -40°C to +85°C. Typical values are at +25°C, VDD = [VREG (Typical) + 1.0V]
Parameters
Sym.
Min.
Typ. Max. Units
Conditions
Thermal Shutdown
Die Temperature
Die Temperature
Hysteresis
TSD
—
150
— C
TSDHYS
—
10
— C
Note 1: Not production tested. Ensured by design.
AC CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, all limits apply for VDD= [VREG(Typical)+0.3V] to 6V,
TA = -40°C to +85°C. Typical values are at +25°C, VDD= [VREG(Typical)+1.0V]
Parameters
Sym.
Min. Typ. Max. Units
Conditions
Elapsed Timer
Elapsed Timer Period
Preconditioning Timer
tELAPSED
3.5
Preconditioning Timer Period
Status Indicator
tPRECHG
0.8
Status Output Turn-Off
tOFF
—
Status Output Turn-On
tON —
Note 1: Not production tested. Ensured by design.
4.0
1
—
—
4.5 Hours
1.2 Hours
500 µs ISINK = 1 mA to 0 mA (Note 1)
500 µs ISINK = 0 mA to 1 mA (Note 1)
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD = [VREG (Typical) + 0.3V] to 6V.
Typical values are at +25°C, VDD = [VREG (Typical) + 1.0V]
Parameters
Sym. Min. Typ. Max. Units
Conditions
Temperature Ranges
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances
TA -40 — +85 °C
TJ -40 — +125 °C
TA -65 — +150 °C
Thermal Resistance, TDFN-6 (2x2)
JA
—
91
— °C/W 4-Layer JC51-7 Standard
Board, Natural Convection
JC — 19 — °C/W
2011-2014 Microchip Technology Inc.
DS20005049D-page 5
5 Page 
5.4 Constant Current Mode – Fast
Charge
During Constant Current mode, the programmed
charge current is supplied to the battery or load.
The charge current is established using a single resis-
tor from PROG to VSS. The program resistor and the
charge current are calculated using the following
equation:
EQUATION 5-1: MCP73830L
Where:
IREG = R----P--2--R--0--O-0----G---
RPROG = kilo-ohms (k)
IREG = milliampere (mA)
EQUATION 5-2: MCP73830
Where:
IREG = R----P-1---0R---0-O--0---G---
RPROG = kilo-ohms (k)
IREG = milliampere (mA)
Constant Current mode is maintained until the voltage
at the VBAT pin reaches the regulation voltage, VREG.
When Constant Current mode is invoked, the internal
timer is reset.
5.4.1
TIMER EXPIRED DURING
CONSTANT CURRENT – FAST
CHARGE MODE
If the internal 4-hour timer expires before the recharge
voltage threshold is reached, a timer fault is indicated
and the charge cycle terminates. The MCP73830/L
devices remain in this condition until the battery is
reinserted, or the input power or CE is cycled.
5.5 Constant Voltage Mode
When voltage at the VBAT pin reaches the regulation
voltage, VREG, the constant voltage regulation begins.
The regulation voltage is factory set to 4.2V, with a
tolerance of ±0.75%.
5.6 Charge Termination
The charge cycle is terminated when, during Constant
Voltage mode, the average charge current diminishes
below a threshold established with the value of 7.5%,
10% of fast charge current, or the internal timer has
expired. A 1 ms filter time on the termination compara-
tor ensures that transient load conditions do not result
in premature charge cycle termination. The timer
period is factory set and no timer option is available.
2011-2014 Microchip Technology Inc.
MCP73830/L
Refer to Section 1.0 “Electrical Characteristics” for
timer period value.
5.7 Automatic Recharge
MCP73830/L devices with automatic recharge options
continuously monitor the voltage at the VBAT pin during
the Charge Complete mode. If the voltage drops below
the recharge threshold, another charge cycle begins,
and current is once again supplied to the battery or
load. The recharge threshold is factory set. Refer to
Section 1.0 “Electrical Characteristics” for recharge
threshold options.
Note: The MCP73830/L also offer options with
no automatic recharge.
For the MCP73830/L with no recharge option, the
devices will go into Standby mode when a termination
condition is met. The charge will not restart until one of
the following conditions is met:
• Battery is removed from the system and inserted
again.
• VDD is removed and plugged in again.
• CE is cycled.
5.8 Thermal Regulation
The MCP73830/L should limit the charge currents
based on the die temperature. The thermal regulation
optimizes the charge cycle time while maintaining
device reliability. Figure 5-1 depicts the thermal
regulation for the MCP73830/L devices. Refer to
Section 1.0 “Electrical Characteristics” for thermal
package resistances, and Section 6.1.1.3 “Thermal
Considerations” for calculating power dissipation.
.
300
250
Mimimum
Maximum
200
150
100
50
0
0
30 60 90 120
Junction Temperature (C)
150
FIGURE 5-1:
Thermal Regulation.
DS20005049D-page 11
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet MCP73830.PDF ] | |
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