AP34063
UNIVERSAL DC/DC CONVERTER
Description
The AP34063 Series is a monolithic control circuit containing the
primary functions required for DC-to-DC converters. These devices
consist
of
an
internal
temperature
compensated
reference,
Pin Assignments
SO-8
( Top View )
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
comparator, controlled duty cycle oscillator with an active current limit
circuit, driver and high current output switch. This series is specifically
designed for incorporating in Step-Down and Step-Up and Voltage-
Inverting
applications
with
a
minimum
number
of
external
1
2
3
4
8
7
6
5
Driver
I
pk
Sense
V
CC
Collector
Comparator
Inverting
Input
components.
Features
•
•
•
•
•
•
•
•
Operation from 3.0V to 40V Input
Low Standby Current
Current Limiting
Output Switch Current to 1.6A
Output Voltage Adjustable
Frequency Operation to 100 kHz
Precision 2% Reference
SO-8 package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
•
PDIP-8 and SO-8 package
Totally Lead-Free; RoHS Compliant (Notes 1 & 2)
Notes:
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
PDIP-8
( Top View )
1
2
3
4
8
7
6
5
Driver
I
pk
Sense
V
CC
Collector
Comparator
Inverting
Input
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com 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.
AP34063
Document number: DS31004 Rev. 6 - 2
1 of 11
www.diodes.com
September 2012
© Diodes Incorporated
AP34063
Absolute Maximum Ratings
(@T
A
= +25°C, unless otherwise specified.)
Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only; functional
operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be affected by exposure to
absolute maximum rating conditions for extended periods of time.
Symbol
V
CC
V
IR
V
C(SWITCH)
V
E(SWITCH)
V
CE(SWITCH)
V
C(DRIVER)
I
C(DRIVER)
I
SW
P
D
θ
JA
Thermal Resistance
θ
JC
T
MJ
T
OP
T
stg
Notes:
Parameter
Power Supply Voltage
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage (V
PIN
1 = 40V)
Switch Collector to Emitter Voltage
Driver Collector Voltage
Driver Collector Current
Switch Current
Power Dissipation (Note 4)
SO-8: T
A
= +25°C
PDIP-8: T
A
= +25°C
SO-8
PDIP-8
SO-8
PDIP-8
Value
40
-0.3 to +40
40
40
40
40
100
1.6
600
1.25
117
138
19
25
+150
0 to +105
-65 to +150
Unit
V
V
V
V
V
V
mA
A
mW
W
°C/W
Maximum Junction Temperature (Note 5)
Operating Junction Temperature Range
Storage Temperature Range
°C
°C
°C
4. Maximum package power dissipation limits must be observed.
5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
Electrical Characteristics
(V
CC
= 5.0V, unless otherwise specified.)
Symbol
OSCILLATOR
f
OSC
I
CHG
I
DISCHG
I
DISCHG
/ I
CHG
Parameter
Frequency (V
PIN
5 = 0V, C
T
= 1.0ηF, T
A
= +25°C)
Charge Current (V
CC
= 5.0V to 40V, T
A
= +25°C)
Discharge Current (V
CC
= 5.0V to 40V, T
A
= +25°C)
Discharge to Charge Current Ratio (Pin 7 to V
CC
, T
A
= +25°C)
Min
24
24
140
5.2
300
Typ
33
30
200
6.5
400
Max
42
42
260
7.5
450
Unit
kHz
µA
µA
—
mV
V
ipk (SENSE)
Current Limit Sense Voltage (I
CHG
= I
DISCHG
, T
A
= +25°C)
OUTPUT SWITCH
(Note 3)
Saturation Voltage, Darlington Connection
V
CE (sat)
(I
SW
= 1.0A, Pins 1, 8 connected)
Saturation Voltage, Darlington Connection
V
CE (sat)
(I
SW
= 1.0A, I
D
= 50mA, Forced
β
≈
20)
h
FE
DC Current Gain (I
SW
= 1.0A, V
CE
= 5.0V, T
A
= +25°C)
I
C(off)
Collector Off-State Current (V
CE
= 40V)
COMPARATOR
V
th
—
—
Threshold Voltage
T
A
= +25°C
T
A
= 0°C to +70°C
—
—
50
—
—
1.225
1.21
—
1.0
0.45
75
0.01
—
1.25
—
1.4
1.3
0.7
—
100
—
1.275
1.29
6.0
V
V
—
µA
V
—
—
mV
Reg
LINE
Threshold Voltage Line Regulation (V
CC
= 3.0V to 40V)
TOTAL DEVICE
I
CC
Supply Current (V
CC
= 5.0V to 40V, C
T
=1.0ηF, Pin 7 = V
CC
,
V
PIN 5
> V
TH
Pin 2 = Gnd, remaining pins open)
—
—
3.5
mA
AP34063
Document number: DS31004 Rev. 6 - 2
5 of 11
www.diodes.com
September 2012
© Diodes Incorporated
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