MPQ8626 – 16V, 6A, HIGH EFFICIENCY SYNC, STEP-DOWN CONVERTER W/ ADJUSTABLE CURRENT LIMIT

MPQ8626 Rev. 1.1

www.MonolithicPower.com

5

8/16/2022

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© 2022 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

VIN = 12V, TJ = -40°C to 125°C, unless otherwise noted.

Parameters

Symbol

Condition

Min

Typ

Max

Units

VIN Supply Current

Supply current (shutdown)

IIN

VEN = 0V

0

10

μA

Supply current (quiescent)

IIN

VEN = 2V, VFB = 0.7V

650

850

μA

MOSFET

Switch leakage

SWLKG_HS

VEN = 0V, VSW = 0V

0

10

μA

SWLKG_LS

VEN = 0V, VSW = 12V

0

30

HS on-state resistance

RDS_ON_HS

VEN = 2V @ 25°C

22.6

m

Ω

LS on-state resistance

RDS_ON_HS

VEN = 2V @ 25°C

8.1

m

Ω

Current Limit

Current limit threshold

VLIM

1.15

1.2

1.25

V

ICS to IOUT ratio

ICS/IOUT

IOUT

≥ 2A

36

40

44

μA/A

Low-side negative current limit

ILIM_NEG_10

-8

A

Negative current limit time-out (7)

tNCL_Timer

80

ns

Timer

Switching frequency (8)

fSW

530

660

790

kHz

935

1100

1265

kHz

1870

2200

2530

kHz

Minimum on time (7)

TON_MIN

50

ns

Minimum off time (7)

TOFF_MIN

VFB = 1000mV

180

ns

Over-Voltage (OVP) and Under-Voltage Protection (UVP)

OVP threshold

VOVP

113%

116%

119%

VREF

UVP threshold

VUVP

77%

80%

83%

VREF

Feedback Voltage and Soft Start (SS)

Feedback voltage

VREF

TJ = -40°C to +125°C

594

600

606

mV

TJ = 0°C to +70°C

597

600

603

mV

TRK/REF sourcing current

ITRACK_Source

VTRK/REF = 0V

15

μA

TRK/REF sinking current

ITRACK_Sink

VTRK/REF = 0.7V

6

μA

Soft-start time

tSS

CTRACK = 1nF

1.6

2.2

ms

Error Amplifier (EA)

Error amplifier offset

VOS

-3

0

3

mV

Feedback current

IFB

VFB = REF

50

100

nA

Enable (EN)

Enable input rising threshold

VIHEN

1.17

1.22

1.27

V

Enable hysteresis

VEN-HYS

200

mV

Enable input current

IEN

VEN = 2V

0

μA

Soft shutdown discharge

MOSFET

RON_DISCH

80

Ω

VIN UVLO

VIN under-voltage lockout

threshold rising

VINVth-Rise

VCC = 3.3V

2.25

2.55

2.85

V

VIN under-voltage lockout

threshold falling

VINVth-Fall

1.7

2

2.3

V

VCC Regulator

VCC under-voltage lockout

threshold rising

VCCVth_Rise

2.65

2.8

2.95

V

VCC under-voltage lockout

threshold falling

VCCVth_Fall

2.35

2.5

2.65

V

VCC output voltage

VCC

2.88

3.00

3.12

V

VCC load regulation

ICC = 25mA

0.5

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