Diodes AP4306 User Manual

AP4306

Document number: DS36792 Rev. 2 - 2

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AP4306

A Product Line of

Diodes Incorporated

Description

The AP4306 is a highly integrated solution for a constant
voltage/constant current mode SMPS application.

The AP4306 contains one 1.21V voltage reference, one low voltage
reference used in current sensing circuit and two operational
amplifiers. The 1.21V voltage reference, combined with one
operational amplifier, makes of an ideal voltage controller for use in
adapters and battery chargers. The low voltage reference, combined
with another operational amplifier, makes of an ideal current limiter for
output low side current sensing.

The AP4306 is fully compatible with AP4305 in functionality and
electrical characteristics except its lower reference voltage for current
control loop, thus higher power efficiency in SMPS applications such
as low power charger can be realized with AP4306 compared to
AP4305.

The AP4306 is available in SOT26 package.

Features

 Constant Voltage and Constant Current Control
 Precision Internal Voltage Reference
 Low External Component Count
 Easy Compensation
 Low Supply Current: 0.5mA
 Current Control Loop Reference

A Version: 70mV
B Version: 100mV
C Version: 150mV

 Operating Temperature Range: -40 to +105oC
 Operating Supply Voltage: 2.5V to 18V
 Totally Lead-free & Fully RoHS Compliant (Note1 & 2)
 Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

(Top View)

1

2

3 4

5

Pin 1 Mark

6

V

SENSE

GND

V

CTRL

I

CTRL

V

OUT

V

CC

SOT26 (K Package)

Applications

 Adapters
 Battery Chargers

CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.

AP4306

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AP4306

A Product Line of

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1.210V

V

CC

V

OUT

GND

V

SENSE

I

CTRL

R

SS

R4

To

primary

R2

R1

V

OUT

+

V

OUT

-

Load

C1

R3

C3

R5

R6
500

V

CTRL

AP4306

+

+

I

L

1.210V

V

CC

V

OUT

GND

V

SENSE

I

CTRL

R

SS

R4

To

primary

R2

R1

V

OUT

+

V

OUT

-

Load

C1

R3

C3

R5

R6
500

V

CTRL

AP4306

+

+

I

L

121R

RR

VV

REFOUT





SS

SENSE

R

V

itCurrentLim 

)(

1

21

)]([

SSLSSLREF

UT

O

RI

R

RR

RIVV 





SS

SENSE

R

V

itCurrentLim 

Typical Applications Circuit

Typical Application 1

Typical Application 2

AP4306

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AP4306

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1.210V

V

CC

V

OUT

GND

V

SENSE

I

CTRL

R

SS

R4

To

primary

R2

R1

V

OUT

+

V

OUT

-

Load

C1

R3

C3

R5

R6

500

V

CTRL

AP4306

+

+

I

L

Pin Number

Pin Name

Function

1

V

CTRL

Input pin of the voltage control loop

2

GND

Ground

3

V

OUT

Output pin. Sinking current only

4

I

CTRL

Input pin of the current control loop

5

V

SENSE

Input pin of the current control loop

6

VCC

Power supply

)(

1

21

SSLREFOUT

RI

R

RR

VV 





 

SSREFSENSE

REFSENSE

RVV

VV

itCurrentLim







Typical Applications Circuit (Cont.)

Pin Descriptions

Typical Application 3

AP4306

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AP4306

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4

5

2

1

3

6

1.210V

V

CC

V

OUT

V

CTRL

GND

V

SENSE

I

CTRL

Symbol

Parameter

Rating

Unit

VCC

Power Supply Voltage

20

V

VIN

Input Voltage

-0.3 to VCC

V

TJ

Junction Temperature

+150

C

T

STG

Storage Temperature

-65 to +150

C

T

LEAD

Lead Temperature (Soldering, 5sec)

+260

C

θ

JA

Thermal Resistance (Junction to Ambient)

250

C/W

Symbol

Parameter

Min

Max

Unit

VCC

Power Supply Voltage

2.5

18

V

T

A

Operating Temperature Range

-40

+105

C

Functional Block Diagram

For A, B, C Versions

Absolute Maximum Ratings (Note 4)

Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied.
Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.

Recommended Operating Conditions

AP4306

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Symbol

Parameters

Conditions

Min

Typ

Max

Unit

TOTAL CURRENT CONSUMPTION

I

CC

Total Supply Current
Not Including the Output Sinking

TA=25oC

–

0.5

1

mA

-40oC<TA <+105oC

–

0.6

–

VOLTAGE CONTROL LOOP

Gmv

Transconduction Gain (V

CTRL

).

Sink Current Only

TA=25oC

1

3.5

–

mA/mV

-40oC<TA <+105oC

–

2.5

–

V

REF

Voltage Control Loop Reference
A Version

TA=+25oC

1.198

1.21

1.222

V

-40oC<TA <+105oC

1.162

1.258

B, C Versions
TA=+25oC

1.204

1.21

1.216

-40oC<TA <+105oC

1.186 – 1.234

I

IBV

Input Bias Current (V

CTRL

)

TA=+25oC

–

50

–

nA

-40oC<TA <+105oC

–

100

–

CURRENT CONTROL LOOP

Gmi

Transconduction Gain (I

CTRL

). Sink

Current Only

TA=+25oC

1.5 7 –

mA/mV

-40oC<TA <+105oC

1.5 7 –

V

SENSE

Current Control Loop Reference

A Version
TA=+25oC

66.5

70

73.5

mV

-40oC<TA <+105oC

63

77

B Version
TA=+25oC

97

100
103

-40oC<TA <+105oC

94

106

C Version
TA=+25oC

147

150
153

-40oC<TA <+105oC

143

157

I

IBI

Current Out of Pin I

CTRL

at V

SENSE

A Version
TA=+25oC

–

18

–

μA

-40oC<TA <+105oC

–

35

–

B Version
TA=+25oC

–

25

–

-40oC<TA <+105oC

–

50

–

C Version
TA=+25oC

–

37.5

–

-40oC<TA <+105oC

–

75

–

OUTPUT STAGE

V

OL

Low Output Voltage at 10mA
Sinking Current

TA=+25oC

–

100

–

mV

-40oC<TA <+105oC

–

100

–

I

OS

Output Short Circuit Current.
Output to V

CC.

Sink Current Only

TA=+25oC

–

27

50

mA

-40oC<TA <+105oC

–

35

–

Symbol

Parameters

Value

Unit

θ

JC

Thermal Resistance (Junction to Case)

84

C/W

Electrical Characteristics (@V

=5V, TA=+25C, unless otherwise specified.)

CC

Thermal Impedance

AP4306

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AP4306

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-40 -20 0 20 40 60 80 100 120

64

66

68

70

72

74

76

V

SENSE

(mV)

Ambient Temperature (oC)

VCC=2.5V
VCC=5V
VCC=18V

-40 -20 0 20 40 60 80 100 120

1.185

1.190

1.195

1.200

1.205

1.210

1.215

1.220

1.225

1.230

1.235

V

REF

(V)

Ambient Temperature (oC)

2.5V<VCC<18V

-40 -20 0 20 40 60 80 100 120

95

96

97

98

99

100

101

102

103

104

105

V

SENSE

(mV)

Ambient Temperature (oC)

VCC=2.5V
VCC=5V
VCC=18V

-40 -20 0 20 40 60 80 100 120

145

146

147

148

149

150

151

152

153

154

155

V

SENSE

(mV)

Ambient Temperature (oC)

VCC=2.5V
VCC=5V
VCC=18V

-40 -20 0 20 40 60 80 100 120

0

20

40

60

80

I

BV

(nA)

Ambient Temperature (oC)

VCC=2.5V
VCC=5V
VCC=18V

-60 -40 -20 0 20 40 60 80 100 120 140

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

I

IBI

(A)

Ambient Temperature (oC)

AP4306A
AP4306B
AP4306C

Performance Characteristics

AP4306 V

REF

AP4306B V

AP4306 I

SENSE

IBV

vs. Ambient Temperature AP4306A V

vs. Ambient Temperature AP4306C V

SENSE

SENSE

vs. Ambient Temperature AP4306 I

vs. Ambient Temperature

vs. Ambient Temperature

vs. Ambient Temperature

IBI

AP4306

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-40 -20 0 20 40 60 80 100 120

20

25

30

35

40

45

50

55

60

65

I

OS

(mA)

Ambient Temperature (oC)

VCC=2.5V
VCC=5V
VCC=18V

-40 -20 0 20 40 60 80 100 120

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

I

CC

(mA)

Ambient Temperature (oC)

VCC=2.5V
VCC=5V
VCC=18V

Performance Characteristics (Cont.)

AP4306 IOS vs. Ambient Temperature AP4306 ICC vs. Ambient Temperature

AP4306

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AP4306 X X XX - XX

Packing

Package

TR: Tape & Reel

K: SOT26

G1: Green

Product Name

E1/G1

E1: Lead Free

Version

A: 70mV V

SENSE

B: 100mV V

SENSE

C: 150mV V

SENSE

Package

Version

Part Number

Marking ID

Packing

Lead Free

Green

Lead Free

Green

SOT26

70mV V

SENSE

AP4306AKTR-E1

AP4306AKTR-G1

E7L

G7L

3000/Tape & Reel

100mV V

SENSE

AP4306BKTR-E1

AP4306BKTR-G1

E7M

G7M

3000/Tape & Reel

150mV V

SENSE

AP4306CKTR-E1

AP4306CKTR-G1

E7N

G7N

3000/Tape & Reel

: Logo

XXX: Marking ID (See ordering information)

Ordering Information

Diodes IC’s Pb-free products with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green package.

Marking Information

AP4306

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2.820(0.111)

3.100(0.122)

2.650(0.104)

3.000(0.118)

1.500(0.059)

1.700(0.067)

0.950(0.037)TYP

1.800(0.071)

2.000(0.079)

0.300(0.012)

0.500(0.020)

0.700(0.028)REF

0.100(0.004)

0.200(0.008)

0°
8°

0.200(0.008)

0.300(0.012)

0.600(0.024)

0.000(0.000)

0.150(0.006)

0.900(0.035)

1.300(0.051)

1.450(0.057)
MAX

1 2 3

4

5

6

Pin 1 Mark

Package Outline Dimensions (All dimensions in mm(inch).)

(1) Package Type: SOT26

AP4306

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E E

G

Z

Y

X

Dimensions

Z

(mm)/(inch)

G

(mm)/(inch)

X

(mm)/(inch)

Y

(mm)/(inch)

E

(mm)/(inch)

Value

3.600/0.142

1.600/0.063

0.700/0.028

1.000/0.039

0.950/0.037

Suggested Pad Layout

(1) Package Type: SOT26

AP4306

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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).

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