MP2637 datasheet(7/36 Pages) MPS

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MP2637 –2.5A SINGLE CELL SW MODE BATTERY CHARGER WITH PPM AND 2.4A BOOST

MP2637 Rev. 1.04

www.MonolithicPower.com

8/3/2017

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

ELECTRICAL CHARACTERISTICS (continued)

VIN = 5.0V, TA = 25°C, unless otherwise noted.

Parameter

Symbol

Condition

Min

Typ

Max

Units

Trickle Charge Voltage Threshold

VBATT_TC

Connect to VB to GND

3.0

3.1

3.2

Leave VB floating or

connect to high logic

2.9

3.1

Trickle Charge Hysteresis

200

Termination Charge Current

IBF

RS1 = 20m

Ω, R

ISET=60.4k

2.5%

10%

17.5%

ICC

RS1 = 20m

Ω, R

ISET=47.5k

2.5%

10%

17.5%

ICC

Input-Voltage-Regulation

Reference

VREG

1.18

1.2

1.22

Boost Mode

SYS Voltage Range

4.2

Feedback Voltage

1.18

1.2

1.22

Feedback Input Current

VFB=1V

200

Boost SYS Over-Voltage

Protection Threshold

VSYS(OVP)

Threshold over VSYS to turn

off the converter during

boost mode

5.6

5.75

5.9

SYS Over Voltage Protection

Threshold Hysteresis

VSYS falling from VSYS(OVP)

125

Boost Quiescent Current

ISYS = 0, MODE = 5V

1.4

Programmable Boost Output

Current Limit Accuracy

IOLIM

RS1 = 20m

Ω, R

OLIM =

57.6k

1.875

2.083

2.290

RS1 = 20m

Ω, R

OLIM = 51k

2.1

SYS Over-Current Blanking

Time

(5)

SYSOCBLK

120

µs

SYS Over-Current Recover

Time

(5)

SYSRECVR

Weak-Battery Threshold

VBATT(LOW)

During boosting

2.5

Before Boost starts

2.9

3.05

Sleep Mode

Battery Leakage Current

ILEAKAGE

VBATT = 4.2V, SYS Float,

VIN = 0V, MODE = 0V

μA

Indication and Logic

ACOK

----------------

, CHG

-------------

, BOOST

-------------------

pin output

low voltage

Sinking 1.5mA

400

ACOK

----------------

, CHG

-------------

, BOOST

-------------------

pin leakage

current

Connected to 5V

μA

NTC and Time-out Fault Blinking

Frequency

(5)

CTMR = 0.1μF, ICHG = 1A

12.5

EN Input Logic Low Voltage

0.4

EN Input High Voltage

1.4

Mode Input Logic Low Voltage

0.4

Mode Input Logic High Voltage

1.4

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