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DS20006394D-page 3

MCP1641X

1.0

ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings†

EN, VFB, VIN, VSW, VOUT – GND .............................................................................................................................+5.5V

EN, VFB .............................................................................................. < Maximum between VOUT or VIN > (GND – 0.3V)

Output Short-Circuit Current .......................................................................................................................... Continuous

Output Current Bypass Mode ...............................................................................................................................600 mA

Power Dissipation .............................................................................................................................. ....Internally Limited

Storage Temperature ............................................................................................................................. -65°C to +150°C

Ambient Temperature with Power Applied ................................................................................................-40°C to +85°C

Operating Junction Temperature, TJ .......................................................................................................-40°C to +125°C

ESD Protection on All Pins:

Human Body Model ............................................................................................................................................... ≥ 4 kV

Charged Device Model ........................................................................................................................................... ≥ 2 kV

†Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the

device. This is a stress rating only and functional operation of the device at those or any other conditions above

those indicated in the operational listings of this specification is not intended. Exposure to maximum rating

conditions for extended periods may affect device reliability.

AC/DC CHARACTERISTICS

Electrical Specifications: Unless otherwise noted, VIN = 1.2V, COUT = CIN = 10 µF, L = 4.7 µH, VOUT = 3.3V,

IOUT = 10 mA, TA = +25°C. Boldface specifications apply over the TA range of -40°C to +85°C.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Input Voltage Range

VIN

0.82

—

5.25

V

Values apply for the entire VOUT

range

Minimum Input Voltage

for Start-up

VIN

——

0.88

V

Undervoltage Lockout

(UVLO)

UVLOSTART

0.83

0.85

0.87

V

Resistive load; UVLO pin

connected to VIN pin

UVLOSTOP

0.74

0.8

0.81

V

UVLOHYS

—50—

mV

Output Voltage Adjust

Range

VOUT

1.8

—

5.25

V

Note 1

Maximum Output Current

IOUT

170

—

—

mA

1.2V VIN, 2.0V VOUT (Note 4)

200

—

—

mA

1.5V VIN, 3.3V VOUT (Note 4)

600

—

—

mA

3.6V VIN, 5.0V VOUT (Note 4)

Feedback Voltage

VFB

0.95

0.97

0.985

V

Note 3

Feedback Input



Bias Current

IVFB

—1—

nA

Note 4

Quiescent Current at

VOUT

IQOUT

—5.0

7.0

µA

EN = VIN, does not include FB

divider current, PFM mode

(MCP16411/3/5/7) (Note 2)

Note 1: For VIN > VOUT, the device enters Automatic Input-to-Output Bypass mode, 

VOUT = VIN – RDS(ON)P * IOUT, maximum VIN is 5.25V.

2: VOUT pin is forced biased with a voltage higher than the nominal VOUT (device is not switching) at

IOUT = 0 mA. IQIN and IQOUT are the device’s current consumption at VIN and VOUT pins during Sleep

periods. The device selects its bias from VIN and/or VOUT.

3: 330

 resistive load, 3.3V VOUT (10 mA).

4: Determined by characterization, not production tested.

5: This is ensured by design.