AIC AIC1630CS, AIC1630CN, AIC1630ACS, AIC1630ACN, AIC16305CS Datasheet

AIC1630

2-Cell, Step-Up DC/DC Converter Controller

Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC www.analog.com.tw

DS-1630-05 TEL: [phone] FAX: [phone]

1

 FEATURES

 Adjustable Output Voltage with Two Resistors

(AIC1630A).

 Power-Saving Shutdown Mode (7µA typical).
 120KHz Switching Rate.
 On-Chip Low Battery Detector.

 APPLICATIONS

 Palmtop & Notebook Computers.
 Battery Charger Supply.
 Cellular Telephone.
 LCD Contrast Supply.
 Flash Memory Programmer.
 Battery Backup Supplies.
 Portable Instruments.

 DESCRIPTION

The AIC1630 is a DC-DC converter designed to
drive an external power switch for more flexibility,
especially in higher voltage and larger power
applications. Typically six components are
required to set up a step up configuration easily
achieving efficiency beyond 80%. A few more
components are required to set up a step down
configuration delivering 4A load current with 83%
typical efficiency, 86% at 2A load, and 300µA
quiescent current.

The output voltage is internally set to 3V, 3.3V, 5V
or externally set to an arbitrary value below
breakdown voltage of the power switch. Logic­controlled shutdown mode is provided for power
saving. The low battery detector can be also
configured as a linear regulator.

120KHz switching rate reduces the inductor size.
Inductors of 25µH to 50µH inductance are
recommended for most applications.

 TYPICAL APPLICATION CIRCUIT

D1

1N5819

+V

OUT

3.3V

C1

100Ω

R3

+V

IN

50

µ

H

5nF C2

270Ω

R4

LOAD

100

µ

F

C3

2SC4672

Q1

AIC1630

SD

VIN

EXT

SGND

VOUT

LBI

LBO

CGND

L

+

100

µ

F

Note : V

IN

≥ 1.8V , V

OUT

≤ 7V

High Efficiency Step-Up DC/DC Converter

AIC1630

2

 ORDERING INFORMATION

PACKAGE TYPE
N: PLASTIC DIP
S: SMALL OUTLINE

TEMPERATURE RANGE
C=0°C~+70°C

OUTPUT VOLTAGE

DEFAULT:3.3V

3: 3.0V
5: 5.0V

A: Adjustable

ORDER NUMBER

AIC1630CN
AIC1630-3CN
AIC1630-5CN
(PLASTIC DIP

)

PIN CONFIGURATION

AIC1630CS
AIC1630-3CS
AIC1630-5CS
(PLASTIC SO)

TOP VIEW

LBO

1

3

4

2

8

6

5

7

VOUT

VIN

EXT

GND

LBI

FB

SD

AIC1630ACN
(PLASTIC DIP

)

AIC1630ACS
(PLASTIC SO)

TOP VIEW

LBO

1

3

4

2

8

6

5

7

VOUT

VIN

EXT

SGND

LBI

CGND

SD

AIC1630 XXX

 ABSOLUTE MAXIMUM RATINGS

Supply Voltage ………………………..…………………………….……………………… 7.0V

DC Voltage Applied On All Other Pins ………………………..…………………………. 7.0V

Operating Temperature Range ………………………….………………………… -20

°C~80°C

Storage Temperature Range …………………………….…………………… -65

°C ~150°C

 TEST CIRCUIT

Refer to Typical Application Circuit.

AIC1630

3

 ELECTRICAL CHARACTERISTICS (V

IN

=3.0V, Ta=25°°°°C, unless otherwise

specified.)

PARAM ETER TEST CONDITIONS MIN. TYP. MAX. UNIT

Input Voltage 1.8 7 V

Default Output Voltage IL=200mA

AIC1630
AIC1630-3
AIC1630-5

3.16

2.88

4.80

3.3

3.0

5.0

3.44

3.12

5.20

V

Switch Off Current 105 140 µA

Shutdown Mode Current 7 15 µA

Recovery Time from Shutdown VIN=2.5V, IL=200mA 0.4 mS

Efficiency IL=300mA

Fig. 1 in Appl. Examples

85 %

Line Regulation VIN=2.2~3.3V

V

OUT

=5V, IL=100mA

0.6 %V

OUT

Load Regulation IL=10mA~500mA

V

OUT

=5V

2.5 %V

OUT

Oscillator Frequency 90 120 150 KHz

LBI Pin Trip Point 1.17 1.22 1.27 V

FB Threshold Voltage AIC1630A 0.598 0.617 0.636 V

EXT Pin Driving Capability Pin 8=5V, Pin 3= 0.85V

Sourcing
Sinking

80
50

mA
mA

LBO “ON Resistance” VIN=2V 45 Ω

Input Pin Bias Current 10 nA/Pin

Output Pin Leakage 10 nA/Pin

AIC1630

4

 TYPICAL PERFORMANCE CHARACTERISTICS

0.6 0.8 1 1.2 1.4 1.6 1.8

EXT Pin Voltage (V)

20

30

40

50

60

70

80

85

Ext Pin Sourcing Capability

V

OUT

=5V

Ta=25°C

EXT (mA)

V

OUT

=3V

0 10 20 30 40 50 60 70 80

30

40

50

60

70

80

90

Ext Pin Sourcing Capability vs Temperature

Tem

p

erature (°C

)

EXT

(mA)

V

OUT

=5V

Ext Pin Voltage=0.85V

V

OUT

=3V

EXT Pin Voltage (V)

35

40

45

50

55

60

65

70

75

80

85

0.6 0.8 1 1.2 1.4 1.6 1.8 2.0

Ta=25°C

V

OUT

=5V

Ext Pin Sinkin

g

Capabilit

y

EXT (mA)

V

OUT

=3V

01020304050607080

35

37

39

41

43

45

47

49

51

53

55

Ext Pin Sinking Capability vs Temperature

Temperature (°C)

EXT

(mA)

V

OUT

=5V

Ext Pin Voltage=0.85V

V

OUT

=3V

1.5 2 2.5 3 3.5 4 4.5 5

VIN (V)

75

80

85

90

95

100

105

110

Switch off Supply Current vs Input Voltage

Ta =2 5°C

IS (

µ

A)

Switch Off Supply Current vs Temperature

0 10203040 50607080

Temperature (°C)

90

95

100

105

110

115

120

S

(

µ

A

)

VIN=3V