ON Semiconductor NCP1400A Technical data

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NCP1400A

100 mA, Fixed Frequency PWM Step−Up Micropower Switching Regulator

The NCP1400A series are micropower step−up DC to DC converters that are specifically designed for powering portable equipment from one or two cell battery packs. These devices are designed to start−up with a cell voltage of 0.8 V and operate down to less than 0.2 V. With only four external components, this series allows a simple means to implement highly efficient converters that are capable of up to 100 mA of output current.

Each device consists of an on−chip fixed frequency oscillator, pulse width modulation controller, phase compensated error amplifier that ensures converter stability with discontinuous mode operation, soft−start, voltage reference, driver, and power MOSFET switch with current limit protection. Additionally, a chip enable feature is provided to power down the converter for extended battery life.

The NCP1400A device series are available in the Thin SOT23−5 package with seven standard regulated output voltages. Additional voltages that range from 1.8 V to 4.9 V in 100 mV steps can be manufactured.

Features

• Extremely Low Start−Up Voltage of 0.8 V

• Operation Down to Less than 0.2 V

• Only Four External Components for Simple Highly Efficient

Converters

• Up to 100 mA Output Current Capability

• Fixed Frequency Pulse Width Modulation Operation

• Phase Compensated Error Amplifier for Stable Converter Operation

• Chip Enable Power Down Capability for Extended Battery Life

• Pb−Free Packages are Available

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5

1

THIN SOT23−5

SN SUFFIX

CASE 483

PIN CONNECTIONS AND

MARKING DIAGRAM

1

CE

2

OUT

3

NC

(Top View)

xxx = Marking Y = Year W = Work Week

ORDERING INFORMATION

See detailed ordering and shipping information in the ordering information section on page 2 of this data sheet.

xxxYW

5

LX

GND

4

T ypical Applications

• Cellular Telephones

• Pagers

• Personal Digital Assistants

• Electronic Games

• Digital Cameras

• Camcorders

• Handheld Instruments

• White LED Torch Light

 Semiconductor Components Industries, LLC, 2004

June, 2004 − Rev. 9

V

IN

Figure 1. Typical Step−Up Converter

1 Publication Order Number:

CE

1

OUT

2

NC

3

Application

LX

5

GND

NCP1400A

4

V

OUT

NCP1400A/D

NCP1400A

(

)

(7 Inch Reel)

Á

ORDERING INFORMATION

Output

Device

Voltage

NCP1400ASN19T1 1.9 V DAI NCP1400ASN19T1G 1.9 V DAI NCP1400ASN22T1 2.2 V DCN NCP1400ASN22T1G 2.2 V DCN NCP1400ASN25T1 2.5 V DAV NCP1400ASN25T1G 2.5 V DAV NCP1400ASN27T1 2.7 V NCP1400ASN30T1 3.0 V DAB NCP1400ASN33T1 3.3 V DAJ NCP1400ASN38T1 3.8 V DBK NCP1400ASN45T1 4.5 V DBL NCP1400ASN50T1 5.0 V DAD NCP1400ASN50T1G 5.0 V DAD

NOTE: The ordering information lists seven standard output voltage device options. Additional devices with output voltage ranging from

1.8 V to 5.0 V in 100 mV increments can be manufactured. Contact your ON Semiconductor representative for availability.

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

Switching

Frequency

180 KHz

Marking Package Shipping

DAA

Thin SOT23−5

3000 / Tape & Reel

7 Inch Reel

†

ABSOLUTE MAXIMUM RATINGS

Rating Symbol Value Unit

Power Supply Voltage (Pin 2) Input/Output Pins

LX (Pin 5)

ББББББББББББББББББ

LX Peak Sink Current

CE (Pin 1)

Input Voltage Range

ББББББББББББББББББ

Input Current Range Thermal Resistance Junction to Air Operating Ambient Temperature Range (Note 2) Operating Junction Temperature Range Storage Temperature Range

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously . If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected.

1. This device series contains ESD protection and exceeds the following tests: Human Body Model (HBM) 2.0 kV per JEDEC standard: JESD22−A114. Machine Model (MM) 200 V per JEDEC standard: JESD22−A115.

2. The maximum package power dissipation limit must not be exceeded.

T

P



D

J(max)

R

JA

 T

A

3. Latch−up Current Maximum Rating: 150 mA per JEDEC standard: JESD78.

4. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J−STD−020A.

V

OUT

V

LX

ÁÁÁ

I

LX

V

CE

ÁÁÁ

I

CE

R



JA

T

A

T

J

T

stg

−0.3 to 6.0

БББББ

400

−0.3 to 6.0

−150 to 150 250

−40 to +85

−40 to +125

−55 to +150

V

ÁÁ

mA

V

ÁÁ

mA

°C/W

°C °C °C

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2

NCP1400A

ELECTRICAL CHARACTERISTICS (For all values T

Characteristic

= 25°C, unless otherwise noted.)

A

Symbol Min Typ Max Unit

OSCILLATOR

Frequency (V

OUT

x 0.96, Note 5) f

SET

OSC

144 180 216 kHz

= V Frequency Temperature Coefficient (TA = −40°C to 85°C) f − 0.11 − %/°C Maximum PWM Duty Cycle (V Minimum Start−up Voltage (IO = 0 mA) V Minimum Start−up Voltage Temperature Coefficient (TA = −40°C to 85°C) V Minimum Operation Hold Voltage (IO = 0 mA) V Soft−Start Time (V

 0.8 V) t

OUT

= V

x 0.96) D

SET

MAX start

start hold SS

68 75 82 %

− 0.8 0.95 V

− −1.6 − mV/°C

0.3 − − V

0.5 2.0 − ms

LX (PIN 5)

LX Pin On−State Sink Current (V

= 0.4 V)

LX

I

LX

Device Suffix:

19T1 22T1 25T1 27T1 30T1 33T1 38T1 45T1 50T1

Voltage Limit (V

= VCE = V

OUT

x 0.96, VLX “L’’ Side) V

SET

Off−State Leakage Current (VLX = 5.0 V, TA = −40°C to 85°C) I

LXLIM

LKG

80 80

80 100 100 100 100 100 100

0.65 0.8 1.0 V

− 0.5 1.0 A

90

90 120 125 130 135 145 155 160

−

CE (PIN 1)

CE Input Voltage (V

High State, Device Enabled Low State, Device Disabled

OUT

= V

SET

x 0.96)

V

CE(high)

V

CE(low)

0.9

−

0.3

CE Input Current (Note 6)

High State, Device Enabled (V Low State, Device Disabled (V

5. V

means setting of output voltage.

SET

6. CE pin is integrated with an internal 150 nA pull−up current source.

= VCE = 5.0 V)

OUT

= 5.0 V, VCE = 0 V)

OUT

I

CE(high)

I

CE(low)

−0.5

0

0.15

0.5

mA

V

A

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3

NCP1400A

ELECTRICAL CHARACTERISTICS (continued) (For all values T

Characteristic UnitMaxTypMinSymbol

TOTAL DEVICE

Output Voltage (V

Device Suffix:

19T1 22T1 25T1 27T1 30T1 33T1 38T1 45T1 50T1

Output Voltage Temperature Coefficient (TA = −40°C to +85°C)

Device Suffix:

19T1 22T1 25T1 27T1 30T1 33T1 38T1 45T1

50T1 Operating Current 2 (V Off−State Current (V Operating Current 1 (V

Device Suffix:

19T1

22T1

25T1

27T1

30T1

33T1

38T1

45T1

50T1

5. V

means setting of output voltage.

SET

6. CE pin is integrated with an internal 150 nA pull−up current source.

= 0.7 x V

IN

OUT

, IO = 10 mA)

OUT

= VCE = V

+0.5 V, Note 5) I

SET

= 5.0 V, VCE = 0 V, TA = −40°C to +85°C, Note 6) I

= VCE = V

SET

x 0.96, f

= 180 kHz)

OSC

= 25°C, unless otherwise noted.)

A

V

OUT

1.853

2.145

2.438

2.633

2.925

3.218

3.705

4.3875

4.875

V

OUT

−

DD2 OFF

I

DD1

− 7.0 15 A

− 0.6 1.5 A

−

1.9

2.2

2.5

2.7

3.0

3.3

3.8

4.5

5.0

100 100 100 100 100 100 150 150 150

23 27 32 32 37 37 44 53 70

V

1.948

2.255

2.563

2.768

3.075

3.383

3.895

4.6125

5.125 ppm/°C

−

A

50 60 60 60 60 60 65 75

100

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4

NCP1400A

2.1

2.0

1.9

1.8

, OUTPUT VOLTAGE (V)

NCP1400ASN19T1

1.7

OUT

V

L = 22 H T

1.6 0

6.0

5.5

5.0

VIN= 0.9 V

4.5

NCP1400ASN50T1

, OUTPUT VOLTAGE (V)

L = 22 H

4.0

OUT

V

T

3.5 0

VIN= 1.5 V

VIN= 0.9 V VIN= 1.2 V

= 25°C

A

4020

, OUTPUT CURRENT (mA)

I

O

60 80

Figure 2. NCP1400ASN19T1 Output Voltage

vs. Output Current

VIN= 3.0 V

VIN= 1.5 V

= 25°C

A

20 100

IO, OUTPUT CURRENT (mA)

VIN= 2.0 V

806040

Figure 4. NCP1400ASN50T1 Output Voltage

vs. Output Current

100

3.4

3.2 VIN= 2.0 V

3.0

VIN= 0.9 V

2.8

, OUTPUT VOLTAGE (V) V

NCP1400ASN30T1 L = 22 H

2.6

OUT

2.4

= 25°C

T

A

080604020 100

VIN= 1.2 V

I

, OUTPUT CURRENT (mA)

O

VIN= 1.5 V

Figure 3. NCP1400ASN30T1 Output Voltage

vs. Output Current

100

80

60

VIN= 0.9 V

40

EFFICIENCY (%)

NCP1400ASN19T1 L = 22 H

20

= 25°C

T

A

0

0806040 10020

VIN= 1.2 V

IO, OUTPUT CURRENT (mA)

VIN= 1.5 V

Figure 5. NCP1400ASN19T1 Efficiency vs.

Output Current

100

VIN= 2.5 V

80

VIN= 0.9 V

60

40

EFFICIENCY (%)

NCP1400ASN30T1 L = 22 H

20

= 25°C

T

A

0

0604020 80 100

VIN= 1.2 V

IO, OUTPUT CURRENT (mA)

VIN= 1.5 V

VIN= 2.0 V

Figure 6. NCP1400ASN30T1 Efficiency vs.

Output Current

100

80

60

40

EFFICIENCY (%)

20

0

080604020 100

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5

VIN= 3.0 V

VIN= 0.9 V

NCP1400ASN50T1 L = 22 H

= 25°C

T

A

VIN= 1.5 V

VIN= 2.0 V

IO, OUTPUT CURRENT (mA)

Figure 7. NCP1400ASN50T1 Efficiency vs.

Output Current