[AP3440]

016008997-E-00

2016/10

- 7 -

9. Electrical Characteristics

(VIN=5.05V, Tj=-40

°C~150°C, unless otherwise specified)

Parameter

Symbol

Min

Typ

Max

Unit

Condition

Output Voltage Accuracy (Note 5)

Vout

1.092

1.112

1.135

V

VIN Pin Current (in operation)

Isupply

-

-

3

mA

VIN Shut-down Current

Ishd1

-

-

1

uA

Tj=25

°C

PVIN Shut-down Current

Ishd2

-

-

1

uA

Tj=25

°C

Over Current Protection Threshold

OCL

5.5

7.85

10.2

A

Coil Peak Current

Over Voltage Protection Threshold

OVP

126

134

142

%

Vout ratio

Oscillation Frequency

Freq

1950

2100

2250

kHz

Soft Start Charging Current

Iss

24

30

36

uA

Soft Start Finishing Threshold

Vss

1.11

1.17

1.23

V

Soft Start Time

Tss

2.1

3.9

6.7

ms

Css=0.1uF

High-side Minimum On-pulse

SWUMINon

-

-

85

ns

Low-side Minimum On-pulse

SWLMINon

-

-

132

ns

High-side On-resistance

of Internal Switching MOSFET

-

91

139

mΩ

Include Cu wire

resistor

Low-side On-resistance

of Internal Switching MOSFET

-

41

69

mΩ

Include Cu wire

resistor

Under Voltage Lock Out

Threshold(UVLO)

3.8

3.95

4.1

V

Output Voltage Monitoring

Threshold (H) (Note 5)

PWGDH

1.144

1.164

1.183

V

Output Voltage Monitoring

Threshold

(L) (Note 5)

PWGDL

1.046

1.063

1.081

V

PG_BAD Detection Time

1

-

4.7

us

PG_GOOD Detection Time

8

10

12

ms

PG Output MOSFET On-resistance

-

-

50

Ω

Drain Current =20mA

EN Pin Pull-down Resistance

60

100

140

kΩ

EN Pin Input Voltage “H” (Note 2)

2.0

-

5.5

V

EN Pin Input Voltage “L” (Note 2)

0

-

0.4

V

MOSFET On-resistance

for EN Off Output Discharge

-

-

200

Ω

Discharging Current =

10mA

Line Regulation (Note 3)

ΔVline

-

-

0.685

%/V

Vin=4.7~5.4V

Load Regulation (Note 3)

ΔVload

-

-

0.3

%

Io=0.1~3.5A

Load Transient Response (Note 3)

Io=2

↔3.5A

Slew rate= 0.2A/us

Overshoot

VtranO

-

-

30.4

mV

Undershoot

VtranU

-

-

33.0

mV

Thermal Protection Threshold

(Note 2, Note 4)

Ttsd

155

175

200

°C

Thermal Protection Hysteresis

(Note 2, Note 4)

TSDhys

1

25

50

°C

FSIN Pin Pull-down Resistance

350

500

650

kΩ

FSIN Pin Input Voltage “H” (Note 2)

2.0

5.5

V

FSIN Pin Input Voltage “L” (Note 2)

0

0.4

V

Note 2. Guaranteed by design.

Note 3. A reference value with the recommended circuit.

Note 4. This function is to protect the IC from an overheat situation. Functional operation of the device

including its reliability is not guaranteed under the condition that the overheat status beyond the

specifications continues.

Note 5. There is no overlap between Output Voltage and Output Voltage Monitoring since these values

are interlocked by tracking.