Datasheet APW38HC43AJI-TR, APW38HC43AJC-TU, APW38HC43AJC-TR, APW38HC42AKI-TU, APW38HC42AKI-TR Datasheet (ANPEC)

APW38HC42A/3A/4A/5A

CMOS Current-Mode PWM Voltage Controller

Features General Description

Ultralow start-up current (25µA typical)

•

• Low operating current (2mA typical)

• Fast output rise/fall times :

−15ns rise/10ns fall

• High output drive (1.2A peak current)

• CMOS outputs with rail-to-rail swing

• Current-mode operation up to 1MHz

• Trimmed 5V bandgap reference

• Pin-to-pin compatible with MIC38HC4X

• Trimmed oscillator discharge current

• UVLO with hysteresis

• Low cross-conduction currents

The APW38HC4XA family are fixed frequency, high
performance, current-mode PWM controller with 1.2
A drive current capability. Undervoltage lockout cir­cuitry allows the APW38HC42A and APW38HC44A
versions to start up at 14.5V and operate down to
9V, and the APW38HC43A and APW38HC45A ver­sions start at 8.4V with operateion down to 7.6V. All
versions operate up to 24V. The ultra low start-up
current 25µA (typical), and operating current 2mA
(typical) have been designed to improve the converter
efficiency. High output driving capability up to 1.2A
ensures the fast switching to minimize the switching
losses. The APW38HC4XA features a trimmed and
temperature compensated oscillator discharge cur­rent and bandgap reference. APW38HC4XA is avail­able in both 8-pin plastic DIP and SOP packages.

Applications

Current-mode , Off-line , Switched-mode Power

•

Supplies

• Current-mode , DC-to-DC converters

• Various converters ( step-down, step-up, flyback

, forward, and synchronous FET)

Pin Description

COMP

FB

ISNS

RT/CT

1
2

3
4

8
7

6
5

VREF
VDD
OUT
GND

Ordering and Marking Information

APW38HC4XA

Handling Code
Temp. Range
Package Code

APW384XA J :

APW384XA K :

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.

APW38HC4XA
XXXXX

APW38HC4XA
XXXXX

Package Code
J : DIP - 8 K : SOP -8
Temp. Range
C : 0 to 70 C I : -40 to 85 C
Handling Code
TU : T u be TR : Tape & Reel

X - 2/3/4/5 XXXXX - Date Code

X - 2/3/4/5 XXXXX - Date Code

°

°

Copyright  ANPEC Electronics Corp.
Rev. A.7 - Jan., 2003

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APW38HC42A/3A/4A/5A

Selection Guide

Duty Cycle

0~96% APW38HC43A APW38HC42A
0~50% APW38HC45A APW38HC44A

Block Diagram

VDD

VREF

RT/CT

FB

2.5V

-

E. A.

+

Startup 8.4V

Minimum Operating 7.6V

5V

Reference

Oscillator

2R

R

UVLO

-

+

T Q

S
R

Startup 14.5V

Minimum Operating 9V

Q

OUT

ISNSGNDCOMP

Functional Pin Description

Pin Name Pin Number Function Description

1 COMP Compensation: Connect external compensation network to

modify the error amplifier output.

2 FB Feedback (Input): Error amplifier input. Feedback is 2.5V at

desired output voltage.

3ISNS

4 RT/CT Timing Resistor/Timing Capacitor: Connect external RC

5 GND Ground: Combined analog and power ground.
6 OUT Power Output: Totem-pole output.
7VDD

8 VREF 5V Reference (Output): Connect external RC network.

Copyright  ANPEC Electronics Corp.
Rev. A.7 - Jan., 2003

Current Sense (Input): Current sense comparator input.
Connect to current sensing resistor or current transformer.

network to select switching frequency.

Analog Supply (Input): Controller ci rcuitry supply input. Return
to analog ground (AGND).

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APW38HC42A/3A/4A/5A

Absolute Maximum Ratings

Symbol Parameter Rating Unit

V

DD

V

ISNS

V

FB

T

J

T

STG

T

SDR

V

ESD

Supply Voltage 24 V
Current Sense Voltage -0.3 to 5.5 V
Feedback Voltage -0.3 to 5.5 V
Junction Temperature Range 300
Storage Temperature -65 to 150
Soldering Temperature 300,10 Seconds
Minimum ESD Rating ±3 kV

Thermal Characteristics

Symbol Parameter Value Unit

θ

JA

Thermal Resistance in Fr ee A ir

DIP
SOP

125
175

Electrical Characteristics

VDD =15V, Note3 ; RT=9.09KΩ; CT=3.3nF; -40oC ≤ TA ≤ 85oC; unless noted

Symbol Parameter Test Conditions

REFEREN CE VO LTA GE

V

REG

REG

Reference Voltage

REF

Line Regulation

line

Load Regulation

load

=25°C, IO(Output Current)=1mA

T

A

12V≤ V
1mA≤ I

DD

O

≤

18V, I

≤

20mA

=5µA

O

Te mp. S t a b i lity 0.2
Total Output Variation Line, Load, Temp. 4.82 5.18 V
Output Noise Voltage

10Hz≤ f ≤10kHz, T

= 25oC

A

Long Term Stability TA = 125oC, 1000 hrs 5 25 mV

I

SC

Output Short Circu it -25 -55 -120 mA

OSCILLATOR

F

I

DISCHG

V

Initial Ac curacy

OSC

Voltage Stability
Temp . Stability

Clock Ramp Reset
Current

Amplitude V

OSC

T

=25°C, Note 4

A

12V≤ V
T

≤ TA ≤ T

MIN

TA=25°C, V
T

A=TMIN
RT/CT

18V

DD

≤

MAX

=2V

RT/CT

to T

MAX

peak to peak 1.6 V

ERROR AMPLIFIER

Input Voltage V

=2.5V 2.42 2.50 2.5 8 V

COMP

APW38HC4XA

Min. Typ. Max.

4.90 5.00 5.10 V
120mV
625mV

50

49 52 55 kHz

0.2 1.0 %

0.03

7.7 8.4 9.0

7.2 8.4 9.5

C/W

°

C

°

C

°

C

°

Unit

mV/°C

V

µ

%/°C

mA

P-P

Copyright  ANPEC Electronics Corp.
Rev. A.7 - Jan., 2003

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APW38HC42A/3A/4A/5A

Electrical Characteristics (Cont.)

VDD =15V, Note3 ; RT=9.09KΩ; CT=3.3nF; -40oC ≤ TA ≤ 85oC; unless noted

Symbol Parameter Test Conditions

ERROR AMPLIFIER

I

Input Bias Current VFB=5V 0.1

FB

A

Open Loop Gain

VOL

2≤ V

4V

O

≤

BW Unit y Gain Band widt h 0.7 1. 0 MH z

PSRR
Output Sink Current VFB=2.7V, V

Output Source Current VFB=2.3V, V
V
V

Output Voltage (High) VFB=2.3V, RL=15k to GND 5 5.4 V

OH

Output Voltage (Low) VFB=2.7V, RL=15k to VREF 0.01 1.1 V

OL

12≤ V

DD

≤

18V

COMP
COMP

=1.1V 2 7 mA
=5V -0.5 -1 mA

CURRENT SENSE

A Gain Notes 1,2 2.85 3.0 3.15 V/V

V

I

Maximum Threshold V

THM

PSRR

Input Bias Current V

ISNS

T

Delay to Output 120 250 ns

D

=5V, Note 1 0.9 1.0 1.1 V

COMP

12≤ V

ISNS

18V, Note 1

DD

≤

=5V 0.1

OUTPUT

t

R

t

F

R

R

Rise Time

Fall Time

High Sourcing Current = 200mA 6.3

DS(ON)

Low Sinking Current = 200mA 4

DS(ON)

T

=25°C, CL=1nF

A

T

=25°C, CL=1nF

A

UNDERVOLTAGE LOCKOUT

V

DD(ST)

V

DD(MIN)

Start Threshold

Minimum Operating Voltage

APW38H C42 /4A 13.5 14.5 15.5
APW38HC43/5A 7.8 8.4 9.0
APW38HC42/4A 8.0 9.0 10.0
APW38HC43/5A 7.0 7.6 8.2

PULSE WIDTH MODULATOR

D

D

Maximum Duty Cycle

MAX

Min imum Du ty Cy c le 0

MIN

APW38HC42/3A 94 96
APW38HC44/5A 46 50

TOTAL STANDBY CURRENT

I

DD(ST)

I

DD(OP)

Start-Up Current

Operating Supply Current VFB =V

VDD=13V, A PW38HC42/4A 30 150
V

=7.5V, APW38HC43 /5A 25 150

DD

= 0V, CL=1nF 2.0 4.0 mA

ISNS

Note 1 : Parameter measured at trip point of latch with VFB=0V.
Note 2 : Gain defined as :

APW38H C4X A

Min. Typ. Max.

60 70 dB

60 dB

70 dB

15 30 ns
10 20 ns

Unit

A

µ

A

µ

Ω

V
V

%
%

A

µ

A = , 0<VTH(ISNS)<0.8V

∆VCOMP

∆VTH(ISNS)

Note 3 : Adjust VDD above the start threshold before setting at 15V.
Note 4 : Output frequency equals oscillator frequency for the APW38HC42A and APW38HC43A. Output

frequency for APW38HC44A and APW38HC45A equals one half of the oscillator frequency.

Copyright  ANPEC Electronics Corp.
Rev. A.7 - Jan., 2003

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APW38HC42A/3A/4A/5A

Typical Characteristics

Oscillator Frequency Configuration

100

200

pF

470

pF

1

nF

10

1.8
nF

4.7
nF

10

nF

RT Resistance (kΩ)

1

10 100 1000

Oscillator Frequency (kHz)

Oscillator Discharge Current vs.

Temperature

9.0

8.8

8.6

8.4

8.2

8.0

7.8

7.6

7.4

7.2

Oscillator Discharge Current (mA)

7.0

-60-30 0 30 6090120150

VDD = 15V
VRTCT = 2V

Output Dead Time vs. Oscillator Frequency

100

10nF

4.7nF

10

Output Dead Time ( %)

1.8nF

200pF

470pF

1nF

1

10 100 1000

Oscillator Frequency (kHz)

Current Sense Amplifier Threshold vs.

Error Amplifier Output

1.2

1.0

0.8

0.6

0.4

0.2

Current Sense AMP Threshold (V)

0.0
01234567

-50oC
25oC

125oC

Temperature (°C)

Copyright  ANPEC Electronics Corp.
Rev. A.7 - Jan., 2003

Error Amplifier Output (V)

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APW38HC42A/3A/4A/5A

Typical Characteristics (Cont.)

Short-Circuit Current of VREF vs.

Temperature

100

90
80
70
60
50
40
30
20
10

VREF Short-Circuit Current (mA)

0

-60 -30 0 30 60 90 120 150

Output Waveform

30

25
20

15

10

5

0

Output Voltage (V)

-5

-10

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Temperature (°C)

Open Loop test Circuit

R

4.7KΩ

1K

Error A m p

Adjust

4.7KΩ

Ω

2N2222

100KΩ

5KΩ

SENSE

I
Adjust

T

COMP

APW38HC42A/3A/4A/5A

VFB

ISENSE

RT/CT

C

T

REF

Vcc

OUTPUT

GND

0.1µF

A

1KΩ,1W0.1µF

Time (µs)

REF

Vcc

Output

GND

Copyright  ANPEC Electronics Corp.
Rev. A.7 - Jan., 2003

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APW38HC42A/3A/4A/5A

Packaging Information

PDIP-8 pin ( Reference JEDEC Registration MS-001)

D

Dim

A

A1
A2

L

e1
e2
e3

E

E1
E3

L

∅

E1

1

A

L

A1

e2

e 1

e 3

Millimeters Inches

Min. Max. Min. Max.

5.33 0.210

0.38 0.015

2.92 3.68 0.115 0.145

9.02 10.16 0.355 0.400

2.54BSC 0.100BSC

0.36 0.56 0.014 0.022

1.14 1.78 0.045 0.070

7.62 BSC

8.26

6.10 7.11 0.240 0.280

10.92 0.430

2.92 3.81 0.115 0.150

10°15

E

A2

1

E3

0.300 BSC

0.325

°

0

°

15

°

Copyright  ANPEC Electronics Corp.
Rev. A.7 - Jan., 2003

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APW38HC42A/3A/4A/5A

Package Information

SOP- 8 pin ( Reference JEDEC Registration MS-012)

e1 e2

D

0.004max.

A1

0.015X45

HE

A

°°°°

e

1

L

Dim

A 1.35 1.75 0.053 0.069

A1 0.10 0.25 0.004 0.010
D 4.80 5.00 0.189 0.197
E 3.80 4.00 0.150 0.157
H 5.80 6.20 0.228 0.244
L 0.40 1.27 0.016 0.050

e1 0.33 0.51 0.013 0.020

e2 1.27BSC 0.50BSC

18

∅

Copyright  ANPEC Electronics Corp.
Rev. A.7 - Jan., 2003

Millimeters Inches

Min. Max . Min. Max.

°

8

°

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APW38HC42A/3A/4A/5A

Physical Specifications

Termina l Mater ial Solder-Plated Cop p er (S o lder Material : 90/10 or 63/37 Sn Pb)
Lead Solderab ility Meets E IA Specification RSI86-91, ANSI/J-STD-002 C ategory 3.

Reflow Condition (IR/Convection or VPR Reflow)

Reference JEDEC Standard J-STD-020A APRIL 1999

Peak temperature

temperature

Pre-heat temperature

°

183 C

Time

Classificatio n R e flow Profiles

Convection or IR/

Convection

Average ramp-up rate(183°C to Peak) 3°C/second max. 10 °C /second max.
Preheat temperature 125 ± 25°C)
Temperature maintained above 183°C
Time within 5°C of actual peak temperature
Peak temperature range
Ramp-down rate
Time 25°C to peak temperature

120 seconds max
60 – 150 seconds
10 –20 seconds 60 seconds
220 +5/-0°C or 235 +5/-0°C 215-219°C or 235 +5/-0°C
6 °C /second max. 10 °C /second max.
6 minutes max.

VPR

Package Reflow Conditions

pkg. thickness ≥≥≥≥ 2.5mm
and all bgas

Convection 220 +5/-0 °C Convection 235 +5/-0 °C
VPR 215-219 °C VPR 235 +5/-0 °C
IR/Convection 220 +5/-0 °C IR/Convection 235 +5/-0 °C

Copyright  ANPEC Electronics Corp.
Rev. A.7 - Jan., 2003

pkg. thickness < 2.5mm and
pkg. volume ≥≥≥≥ 350 mm³

pkg. thickness < 2.5mm and p kg .
volume < 350mm³

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APW38HC42A/3A/4A/5A

Re lia b i li ty test prog r am

Test item Method Description

SOLDERABILITY MIL-STD-883D-2003
HOLT MIL-STD-883D-1005.7
PCT JESD-22-B, A102
TST MIL-STD-883D-1011.9
ESD MIL-STD-883D-3015.7 VHBM > 2KV, VMM > 200V
Latch-Up JESD 78 10ms , Itr > 100mA

Carrier Tape & Reel Dimensions

245°C , 5 SEC
1000 Hrs Bias @ 125 °C
168 Hrs, 100 % RH , 121°C

-65°C ~ 150°C, 200 C y c les

t

E

Po

F

W

A

P

P1

Ao

J

D

Bo

Ko

D1

T2

C

B

Application

SOP-8

Application

SOP-8

Copyright  ANPEC Electronics Corp.
Rev. A.7 - Jan., 2003

A B C J T1 T2 W P E

330±162 ± 1.5 12.75 +

F D D1 Po P1 Ao Bo Ko t

5.5 ± 0.1 1.55±0.1 1.5+ 0.25 4.0 ± 0.1 2.0 ± 0.1 6.4 ± 0.1 5.2± 0.1 2.1± 0.1 0.3±0.013

0.1 5

T1

2 + 0.5 12.4 +0.2 2± 0.2 12 + 0.3

- 0.1

8± 0.1 1.75± 0.1

(mm)

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APW38HC42A/3A/4A/5A

Cover Tape Dimensions

Application Carrier Width Cover Tape Width Devices Per Reel

SOP- 8

Customer Service

Anpec Electronics Corp.

Head Office :

5F, No. 2 Li-Hsin Road, SBIP,
Hsin-Chu, Taiwan, R.O.C.
Tel : [phone]
Fax : [phone]

Taipei Branch :

7F, No. 137, Lane 235, Pac Chiao Rd.,
Hsin Tien City, Taipei Hsien, Taiwan, R. O. C.
Tel : [phone]
Fax : [phone]

12 9.3 2500

Copyright  ANPEC Electronics Corp.
Rev. A.7 - Jan., 2003

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