The H34063AP 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,
comparator, controlled duty cycle oscillator with an active current
limit circuit, driver and high current output switch. This series was
specifically by Hi-Sincerity Microelectronics Corp.
Features
3V to 40V Input Voltage Operation
•
Internal 1.6A Peak Current Switch
•
Internal ±1.8% Reference
•
Low Quiescent Current at 1.6mA
•
Frequency Operation from 100Hz~100KHz
•
Current Limiting
•
Spec. No. : Preliminary Data
Issued Date : 1998.08.01
Revised Date : 1999.06.01
Page No. : 1/6
Applications
Saver for Cellular Phone
•
DC-DC Converter Module
•
Typical Application Circuit
Fig1.Saver Circuit for Cellular Phone
RSC
V
in
C1
100µF
H34063AP
8
7
6
5
RA
5.6k
Ω
RB
33k
L1
200µH
1
2
3
C
4
Ω
T
470ρF
D1
H1N5819
V
out
C
out
220µF
HSMC Product Specification
Page 2
Pin Connections
HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : Preliminary Data
Issued Date : 1998.08.01
Revised Date : 1999.06.01
Page No. : 2/6
5678
Pin1:Switch CollectorPin5:Comparator Inverting Input
Pin2:Switch EmitterPin6:Vcc
Pin3:Timing CapacitorPin7:Ipk Sense
1234
Pin4:GndPin8:Driver Collector
Absolute Maxium Rating
Supply Voltage ..................................................................................................................... 40 V
Comparator Input Voltage Range ............................................................................. -0.3V ~ 40 V
Switch Collector Voltage ...................................................................................................... 40 V
Switch Emitter Voltage ......................................................................................................... 40 V
Switch Collector to Emitter Voltage ...................................................................................... 40 V
Driver Collector Voltage ....................................................................................................... 40 V
Switch Current ..................................................................................................................... 1.6 A
Power Dissipation DIP Package Ta=25°C .......................................................................... 1.0 W
Thermal Resistance Junction To Air............................................................................ 125 °C / W
Operating Junction Temperature ........................................................................................ 125 °C
Operating Ambient Temperature Range ........................................................................ 0 ~ 70 °C
Storage Temperature Range................................................................................ -40 °C ~ 125 °C
Electrical Characteristics
(Vcc=5V,Ta=25°C, unless otherwise specified)
ParameterTest ConditionSymbolMin.Typ.Max.Unit
Oscillator
Charging Current
Discharge Current
5.0V≤V
5.0V≤V
CC
CC
≤
≤
40V
40V
Voltage AmplitudePin3V
Discharge to Charge Current Ratio V
Current Limit Sense VoltageI
IPK(Sense)
Chg=Idischg
=V
CC
I
chg
I
dischg
OSC
I
Dischg/Ichg
V
IPK(Sence)
243542uA
140220260uA
-0.6- V
5.26.57.5
250300350mV
Output Switch
Saturation Voltage, Darlington
Connection
Saturation Voltage
ISW=1.0A,
V
C(Driver)=
I
=1.0A,
SW
I
C(Driver)
=50mA
VC(Switch)
V
CE(Sat)
V
CE(Sat)
-1.01.3V
-0.40.7V
(Forced β ≈ 20)
DC Current GainISW=1.0A, VCE=5.0VhFE5075-V
Collector Off-State CurrentVCE=30VI
CC(Off)
-0.01100UA
Comparator
Threshold Voltage
Threshold Voltage
Threshold Voltage Line Regulation
0°C≤Ta≤70°C
3.0V≤V
CC
≤
40V
Regline-1.56mV
Input Bias CurrentVIN=0VI
V
IPK(Sence)=VCC
V
,
>
Pin5
T
FB
40V
≤
CC
=0.0001uF,Pin2=Gnd
Supply Current
V
5.0V≤V
C
V
I
FB
IB
CC
1.227
1.210
1.250-1.273
1.29
--20-400nA
-1.63mA
Remaining pins open
V
HSMC Product Specification
Page 3
Block Diagram
g
r
HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : Preliminary Data
Issued Date : 1998.08.01
Revised Date : 1999.06.01
Page No. : 3/6
DRI
Pin8:Driver Collector
IPK
Pin7:Highside Current Se ns e
Input, VCC-VIPK=300mV
VCC
Pin6:Power Supply Input
FB
Pin5:Feedback Comparator
Inverting Input
Pin1:1.6A Switch Collector
Pin2:Darlington Switch Emitter
Pin3:Oscilletor Timin
Pin4:Power GND
Capacito
GND
SC
SE
TC
Q2
Q1
80
CT
1.25V
Reference Voltage
QS
R
Ω
IPK
Oscillator
Comparator
+
-
Application Information
Design Formula Table
CalculationStep-DownStep-UpVoltage-Inverting
V
ton / t
(ton + t
I
C(switch)
off
) max1/F
off
C
T
V
in(min)
out+VF
4*10-5t
2*I
RS0.3 / I
(V
L
(min)
C
O
sat
V
: Saturation voltage of the output switch.
F
: Forward voltage drop of the ringback rectifier.
V
The following power supply characteristics must be chosen :
in
V
: Nominal input voltage.
out
V
: Desired output voltage. |V
out
I
- Desired output current
Fmin : Minimum desired output switching frequency at the selected values for V
Ripple(P-P)
V
due to the capacitor equ iv ale nt s er ies re sis ta nc e an d bo ar d layout. The ripple volt age s hou ld be kept to a low value
since it will directly effect the line and load regulation.
: Desired peak to peak output ripple v oltage in practice, the calculat ed value will need to be incr eased
in(min)-Vsat-Vout
*t
I
C(switch)
8V
Ripple(P-P)
/
-V
sat-VOut
min
on
out(max)
C(switch)
I
/
C(switch)
on(max)
*(ton+t
out
|=1.25*(1+RB/RA)
off)
/
Vout+VF-V
V
in(min)-Vsat
1/F
min
4*10-5t
2*I
out(max)(ton+toff/toff
0.3 / I
C(switch)
)
(V
in(min)-Vsat
I
out*ton
*t
on(max)
/ V
/
Ripple(P-P)
in(min)
on
I
C(switch)
/
)2*I
|V
out(max)(ton+toff/toff
0.3 / I
)
in
and I
(V
in(min)-Vsat
I
out*ton
out
.
| + V
out
Vin-V
1/F
min
4*10-5t
C(switch)
*t
on(max)
/ V
F /
sat
on
I
/
C(switch)
Ripple(P-P)
)
)
HSMC Product Specification
Page 4
HI-SINCERITY
Q
(
MICROELECTRONICS CORP.
Application Information
Fig.2 Step-Up Converter
RSC
0.22
in
V
2.2k
(Continuos)
R1
Ω
150
C1
100µF
RA
Ω
Spec. No. : Preliminary Data
Issued Date : 1998.08.01
Revised Date : 1999.06.01
Page No. : 4/6