NJU7261U50 [NJRC]

C-MOS STEP-UP SWITCHING REGULATOR; C-MOS升压型开关稳压器


型号：	NJU7261U50
厂家：	NEW JAPAN RADIO
描述：	C-MOS STEP-UP SWITCHING REGULATOR C-MOS升压型开关稳压器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管 ISM频段
文件：	总8页 (文件大小：132K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

NJU7261 Series

PRELIMINARY

C-MOS STEP-UP SWITCHING REGULATOR

■ GENERALDESCRIPTION

■ 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.

NJU7261UX

■ FEATURES

■ PIN CONFIGULATION

• Low Operating Voltage

• Low Operating Current

• Low Stand-by Current

(1.0V min.)

(5.0µA typ. / V_OUT= 3.0V)

(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

3.3

4.5

5.0

NJU7261U30

NJU7261U33

NJU7261U45

NJU7261U50

■ TERMINAL DESCRIPTION

No.

Term. Name

I/O

FUNCTION

CONT

External Inductor Connect Terminal

GND

POWER

Power Source (GND)

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

STB

" L"

···Standp-By Operation

V_IN

POWER

Power Source (+)

Step-up Output Terminal

V_OUT

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NJU7261 Series

■ ABSOLUTE MAXIMUM RATINGS

(T_a= 25ºC)

PARAMETER

SYMBOL

RATINGS

GND-0.3 ≤ V_CONT≤ 10

GND-0.3 ≤ V_STB≤ V_IN

GND-0.3 ≤ V_OUT≤ 10

300

UNIT

Input Voltage

V_IN

V_CONT

V_STB

V_OUT

P_D

ºC

CONT Input Voltage

Strobe Input Voltage

Output Voltage

Power Dissipation

Operating Temperature Range

Storage Temperature Range

T_opr

T_stg

-25 to + 75

-40 to +125

Note1) When a coil used. This IC of V_CONTpossible 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

TYP.

3.0

MEASUREMENT

PARAMETER

SYMBOL

CONDITION

UNIT

CIRCUIT

MIN.

2.91

MAX.

5.0

1.0

3.09

Input Voltage

Start Voltage

Oscillator Freq.

Output Voltage

V_IN

V_START

f_OSC

kHz

NO LOAD

V_IN= 1.5V

V_IN= 1.5V, I_OUT= 20mA

V_OUT

V_IN= 1.5V to 2.0V

Input Stability

∆V_OUT1

100

I_OUT= 20mA

V_IN= 1.5V

Load Stability

∆V_OUT2

I_SS

5.0

100

µA

I_OUT= 10µA to 25mA

Operating Current

Stand-by Current

Switching Current

V_IN= V_STB= 1.5V, NO LOAD

V_IN= 1.5V

I_Q

0.2

V_STB= 0V, NO LOAD

I_SI

V_DS= 0.2V

V_IN= 1.5V

V_IN= 1.5V, V_STB= 1.0V

V_IN= 1.5V, V_STB= 1.5V

V_IN= 1.5V, V_STB= 0.4V

V_IN= 1.5V, V_STB= 0V

1.0

250

0.1

0.4

µA

H level

L level

V_STBH

V_STBL

I_STBH1

I_STBH2

I_STBL1

I_STBL2

STB Terminal

Input Voltage

H level

STB Terminal

Input Current

L level

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NJU7261 Series

+3.3V Version

(T_a= 25°C)

NORM

TYP.

MEASUREMENT

PARAMETER

SYMBOL

CONDITION

UNIT

CIRCUIT

MIN.

3.20

MAX.

5.0

1.0

3.40

Input Voltage

Start Voltage

Oscillator Freq.

Output Voltage

V_IN

V_START

f_OSC

kHz

NO LOAD

V_IN= 1.5V

V_IN= 1.5V, I_OUT= 20mA

3.30

V_OUT

V_IN= 1.5V to 3.0V

Input Stability

∆V_OUT1

100

I_OUT= 20mA

V_IN= 1.5V

Load Stability

∆V_OUT2

I_SS

100

µA

I_OUT= 10µA to 25mA

Operating Current

Stand-by Current

Switching Current

V_IN= V_STB= 1.5V, NO LOAD

V_IN= 1.5V

I_Q

0.2

V_STB= 0V, NO LOAD

I_SI

V_DS= 0.2V

V_IN= 1.5V

V_IN= 1.5V, V_STB= 1.0V

V_IN= 1.5V, V_STB= 1.5V

V_IN= 1.5V, V_STB= 0.4V

V_IN= 1.5V, V_STB= 0V

1.0

250

0.1

0.4

µA

H level

L level

V_STBH

V_STBL

I_STBH1

I_STBH2

I_STBL1

I_STBL2

STB Terminal

Input Voltage

H level

STB Terminal

Input Current

L level

+4.5V Version

(T_a= 25°C)

NORM

TYP.

MEASUREMENT

PARAMETER

SYMBOL

CONDITION

UNIT

CIRCUIT

MIN.

4.36

MAX.

4.5

1.0

4.64

Input Voltage

Start Voltage

Oscillator Freq.

Output Voltage

V_IN

V_START

f_OSC

kHz

NO LOAD

V_IN= 3.0V

V_IN= 3.0V, I_OUT= 20mA

4.50

V_OUT

V_IN= 2.0V to 3.0V

Input Stability

∆V_OUT1

100

I_OUT= 20mA

V_IN= 3.0V

Load Stability

∆V_OUT2

I_SS

100

µA

I_OUT= 10µA to 25mA

Operating Current

Stand-by Current

Switching Current

V_IN= V_STB= 3.0V, NO LOAD

V_IN= 3.0V

I_Q

0.2

V_STB= 0V, NO LOAD

I_SI

V_DS= 0.2V

V_IN= 3.0V

V_IN= 3.0V, V_STB= 2.4V

V_IN= 3.0V, V_STB= 3.0V

V_IN= 3.0V, V_STB= 0.4V

V_IN= 3.0V, V_STB= 0V

2.4

250

0.1

µA

H level

L level

V_STBH

V_STBL

I_STBH1

I_STBH2

I_STBL1

I_STBL2

STB Terminal

Input Voltage

0.4

100

H level

STB Terminal

Input Current

L level

Ver.2003-07-18

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NJU7261 Series

+5.0V Version

(T_a= 25°C)

NORM

TYP.

5.0

MEASUREMENT

PARAMETER

SYMBOL

CONDITION

UNIT

CIRCUIT

MIN.

4.85

MAX.

5.0

1.0

5.15

Input Voltage

Start Voltage

Oscillator Freq.

Output Voltage

V_IN

V_START

f_OSC

kHz

NO LOAD

V_IN= 3.0V

V_IN= 3.0V, I_OUT= 20mA

V_OUT

V_IN= 2.0V to 3.0V

Input Stability

∆V_OUT1

100

I_OUT= 20mA

V_IN= 3.0V

Load Stability

∆V_OUT2

I_SS

100

µA

I_OUT= 10µA to 25mA

Operating Current

Stand-by Current

Switching Current

V_IN= V_STB= 3.0V, NO LOAD

V_IN= 3.0V

I_Q

0.2

V_STB= 0V, NO LOAD

I_SI

V_DS= 0.2V

V_IN= 3.0V

V_IN= 3.0V, V_STB= 2.4V

V_IN= 3.0V, V_STB= 3.0V

V_IN= 3.0V, V_STB= 0.4V

V_IN= 3.0V, V_STB= 0V

2.4

250

0.1

µA

H level

L level

V_STBH

V_STBL

I_STBH1

I_STBH2

I_STBL1

I_STBL2

STB Terminal

Input Voltage

0.4

100

H level

STB Terminal

Input Current

L level

Ver.2003-07-18

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NJU7261 Series

■ MEASUREMENT CIRCUIT 1

(1)

External Diode Type : "D1NS4" provided by SHINDENGEN

(I_F= 1A, V_F= 0.55V)

(2)

(3)

OUT

I_SS= I₁+ l₂x

Under the condition of V₂=V_OUT+ 1.0V

Ver.2003-07-18

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NJU7261 Series

■ MEASUREMENT CIRCUIT 2

(4)

(5)

(6)

Ver.2003-07-18

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NJU7261 Series

■ APPLICATION CIRCUIT

Ver.2003-07-18

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NJU7261 Series

■ TYPICAL CHARACTERISTIC

Start Voltage vs. Temperature

Internal Oscillator Operation : External D1NS4

Start Voltage vs. Temperature

Internal Oscillator Operation : External D1NS4

Oscillation Frequency vs. Temperature

[CAUTION]

The specifications on this databook are only

given for information , without any guarantee

as regards either mistakes or omissions. The

application circuits in this databook are

described only to show representative usages

of the product and not intended for the

guarantee or permission of any right including

the industrial rights.

Ver.2003-07-18

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NJU7261U50 [NJRC]

相关型号：

NJU7261U50(TE1)

NJU7261U50(TE2)

NJU7261UX

NJU7262

NJU7262M30

NJU7262M30(T2)

NJU7262M30(TE2)

NJU7262M30(TE3)

NJU7262M30(TE4)

NJU7262M50

NJU7262M50(T2)

NJU7262M50(TE2)