NJU7261U45 Datasheet NJU7261U45, NJU7261U33-TE1, NJU7261U30 | P1-P3

NJU7261 Series

-1-

Ver.2003-07-18

PRELIMINAR

Y

C-MOS STEP-UP SWITCHING REGULATOR

■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE

The NJU7261 series is a C-MOS step-up switching regulator

which contains accurate voltage reference, error amplifier, CR

oscillator, control circuit, switching transistor, diode and resistor.

The stand-by function is effective for low power consumption.

The regulation voltage is fixed by internal circuits and the following

line-up of different output voltages version are available.

This series is suitable for portable equipment's or battery operated

items because of its small packaged outline, low operating voltage

and current.

■ FEATURES ■ PIN CONFIGULATION

• Low Operating Voltage (1.0V min.)

• Low Operating Current (5.0µA typ. / V

OUT

= 3.0V)

• Low Stand-by Current (0.2µA max. / V

OUT

= 3.0V)

• High Precision Output Voltage (±3% max.)

• Wide Operating Voltage Range

• Stand-by Function

• CR Oscillator On-chip

• Diode On-chip

• Package Outline SOT89-5

• C-MOS Technology

■ LINE-UP ■ EQUIVALENT CIRCUIT

Output Voltage (V) Line-Up

3.0 NJU7261U30

3.3 NJU7261U33

4.5 NJU7261U45

5.0 NJU7261U50

■ TERMINAL DESCRIPTION

No. Term. Name I/O FUNCTION

1 CONT I External Inductor Connect Terminal

2 GND POWER Power Source (GND)

3 STB I

Strobe Terminal : "H" or OPEN···Normal Operation (step-up)

" L" ···Standp-By Operation

4 V

IN

POWER Power Source (+)

5 V

OUT

O Step-up Output Terminal

NJU7261UX

NJU7261 Series

- 2 -

Ver.2003-07-18

■ ABSOLUTE MAXIMUM RATINGS (T

a

= 25ºC)

PARAMETER SYMBOL RATINGS UNIT

Input Voltage V

IN

10 V

CONT Input Voltage V

CONT

GND-0.3 ≤ V

CONT

≤ 10 V

Strobe Input Voltage V

STB

GND-0.3 ≤ V

STB

≤ V

IN

V

Output Voltage V

OUT

GND-0.3 ≤ V

OUT

≤ 10 V

Power Dissipation P

D

300 mW

Operating Temperature Range T

opr

-25 to + 75 ºC

Storage Temperature Range T

stg

-40 to +125 ºC

Note1) When a coil used. This IC of V

CONT

possible over the absolute maximum ratings. Consequently please conduct

enough to test.

Note2) The CONT input voltage (V

CONT

) should be inspected at the real application circuit, as some kinds of coils make

the CONT input voltage exceed the Absolute Maximum Rating of the V

CONT

.

■ ELECTRICAL CHARACTERISTICS

+3.0V Version (T

a

= 25°C)

NORM

PARAMETER SYMBOL CONDITION

MIN. TYP. MAX.

UNIT

MEASUREMENT

CIRCUIT

Input Voltage V

IN

- - 5.0 V 1

Start Voltage V

START

NO LOAD - - 1.0 V 1

Oscillator Freq. f

OSC

V

IN

= 1.5V 20 30 50 kHz 2

Output Voltage V

OUT

V

IN

= 1.5V, I

OUT

= 20mA 2.91 3.0 3.09 V 1

Input Stability ∆V

OUT1

V

IN

= 1.5V to 2.0V

I

OUT

= 20mA

- 30 100 mV 1

Load Stability ∆V

OUT2

V

IN

= 1.5V

I

OUT

= 10µA to 25mA

- 30 100 mV 1

Operating Current I

SS

V

IN

= V

STB

= 1.5V, NO LOAD - 5.0 10 µA 3

Stand-by Current I

Q

V

IN

= 1.5V

V

STB

= 0V, NO LOAD

- - 0.2 µA 4

Switching Current I

SI

V

DS

= 0.2V - 250 - mA -

H level V

STBH

V

IN

= 1.5V 1.0 - - V 5

STB Terminal

Input Voltage

L level V

STBL

V

IN

= 1.5V - - 0.4 V 5

I

STBH1

V

IN

= 1.5V, V

STB

= 1.0V - 15 30 µA 6

H level

I

STBH2

V

IN

= 1.5V, V

STB

= 1.5V - 0.1 - µA 6

I

STBL1

V

IN

= 1.5V, V

STB

= 0.4V - 15 30 µA 6

STB Terminal

Input Current

L level

I

STBL2

V

IN

= 1.5V, V

STB

= 0V - 0.1 - µA 6

NJU7261 Series

-

3

-

Ver.2003-07-18

+3.3V Version (T

a

= 25°C)

NORM

PARAMETER SYMBOL CONDITION

MIN. TYP. MAX.

UNIT

MEASUREMENT

CIRCUIT

Input Voltage V

IN

- - 5.0 V 1

Start Voltage V

START

NO LOAD - - 1.0 V 1

Oscillator Freq. f

OSC

V

IN

= 1.5V 20 30 50 kHz 2

Output Voltage V

OUT

V

IN

= 1.5V, I

OUT

= 20mA 3.20 3.30 3.40 V 1

Input Stability ∆V

OUT1

V

IN

= 1.5V to 3.0V

I

OUT

= 20mA

- 30 100 mV 1

Load Stability ∆V

OUT2

V

IN

= 1.5V

I

OUT

= 10µA to 25mA

- 30 100 mV 1

Operating Current I

SS

V

IN

= V

STB

= 1.5V, NO LOAD - 5 10 µA 3

Stand-by Current I

Q

V

IN

= 1.5V

V

STB

= 0V, NO LOAD

- - 0.2 µA 4

Switching Current I

SI

V

DS

= 0.2V - 250 - mA -

H level V

STBH

V

IN

= 1.5V 1.0 - - V 5

STB Terminal

Input Voltage

L level V

STBL

V

IN

= 1.5V - - 0.4 V 5

I

STBH1

V

IN

= 1.5V, V

STB

= 1.0V - 15 30 µA 6

H level

I

STBH2

V

IN

= 1.5V, V

STB

= 1.5V - 0.1 - µA 6

I

STBL1

V

IN

= 1.5V, V

STB

= 0.4V - 15 30 µA 6

STB Terminal

Input Current

L level

I

STBL2

V

IN

= 1.5V, V

STB

= 0V - 0.1 - µA 6

+4.5V Version (T

a

= 25°C)

NORM

PARAMETER SYMBOL CONDITION

MIN. TYP. MAX.

UNIT

MEASUREMENT

CIRCUIT

Input Voltage V

IN

- - 4.5 V 1

Start Voltage V

START

NO LOAD - - 1.0 V 1

Oscillator Freq. f

OSC

V

IN

= 3.0V 20 30 50 kHz 2

Output Voltage V

OUT

V

IN

= 3.0V, I

OUT

= 20mA 4.36 4.50 4.64 V 1

Input Stability ∆V

OUT1

V

IN

= 2.0V to 3.0V

I

OUT

= 20mA

- 30 100 mV 1

Load Stability ∆V

OUT2

V

IN

= 3.0V

I

OUT

= 10µA to 25mA

- 30 100 mV 1

Operating Current I

SS

V

IN

= V

STB

= 3.0V, NO LOAD - 5 15 µA 3

Stand-by Current I

Q

V

IN

= 3.0V

V

STB

= 0V, NO LOAD

- - 0.2 µA 4

Switching Current I

SI

V

DS

= 0.2V - 250 - mA -

H level V

STBH

V

IN

= 3.0V 2.4 - - V 5

STB Terminal

Input Voltage

L level V

STBL

V

IN

= 3.0V - - 0.4 V 5

I

STBH1

V

IN

= 3.0V, V

STB

= 2.4V - 50 100 µA 6

H level

I

STBH2

V

IN

= 3.0V, V

STB

= 3.0V - 0.1 - µA 6

I

STBL1

V

IN

= 3.0V, V

STB

= 0.4V - 50 100 µA 6

STB Terminal

Input Current

L level

I

STBL2

V

IN

= 3.0V, V

STB

= 0V - 0.1 - µA 6

NJU7261U45

NJU7261U45

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