UNIVERSAL DC/DC CONVERTER
FSP34063
FEATURES GENERAL DESCRIPTION
z Operation from 3.0V to 40V Input The FSP34063 Series is a monolithic control circuit
z Low Standby Current containing the primary functions required for DC-to-DC
z Current Limiting converters. These devices consists of an internal
z Output Switch Current to 1.6A temperature compensated reference, comparator,
z Output Voltage Adjustable controlled duty cycle oscillator with an active current
z Frequency Operation to 100kHz limit circuit, driver and high current output switch. This
z Precision 2% Reference series is specifically designed for incorporating in
z SOP8L and PDIP8L Packages Step-Down and Step-Up and Voltage-Inverting
applications with a minimum number of external
components.
PIN CONFIGURATION
(Top View)
Switch Collector 1 8 Driver
Switch Emitter 2 7 IPK sensor
Timing Capacitor 3 6 VCC
Gnd 4 5 Comparator inverting input
REPRESENTATIVE SCHEMATIC DIAGRAM
Driver Sw itch
Collector 8 1 Collector
S Q Q2
Q1
R
Ipk Sensor 7 100
Ipk 2 Sw itch
CT Emitter
Oscillator
Vcc 6 Comparator 3 Timing
Capacitor
+ 1.25V
Reference
- Regulator
Comparator
Inverting 5 4 Gnd
Input
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UNIVERSAL DC/DC CONVERTER
FSP34063
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Rating Unit
VCC Power Supply Voltage 40 V
VIR Comparator Input Voltage Range -0.3~+40 V
VC(switch) Switch Collector Voltage 40 V
VE(switch) Switch Emitter Voltage(VPin1=40V) 40 V
VCE(switch) Switch Collector to Emitter Voltage 40 V
VC(driver) Driver Collector Voltage 40 V
IC(driver) Driver Collector Current(Note1) 100 mA
ISW Switch Current 1.6 A
PD SOP8L: TA=25℃ 600 mW
θJA Power Dissipation and Thermal Thermal Resistance 160 ℃/W
PD Characteristics PDIP8L: TA=25℃ 1.25 W
θJA Thermal Resistance 100 ℃/W
TJ Operating Junction Temperature +150 ℃
0~+70
TA Operating Ambient Temperature Range ℃
-40~+85
Tstg Storage Temperature Range -65~+150 ℃
Notes: 1.Maximum package power dissipation limits must be observed.
2.ESD data available upon request.
ELECTRICAL CHARACTERISTICS(VCC=5V, UNLESS OTHERWISE NOTED)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
Oscillator section
fosc Frequency VPin 5=0V, CT=1.0nF, TA=25℃ 24 33 42 kHz
Ichg Charge Current VCC=5.0V to 40V, TA=25℃ 24 30 42 µA
Idischg Discharge Current VCC=5.0V to 40V, TA=25℃ 140 200 260 µA
Discharge to Charge
Idischg/Ichg Pin7 to Vcc, TA=25℃ 5.2 6.5 7.5
Current Ratio
Current Limit Sense
Vipk(sense) Ichg=Idischg, TA=25℃ 300 400 450 mV
Voltage
Output switch section
Saturation Voltage,
VCE(sat) ISW=1.0A, Pins 1,8 connected 1.0 1.3 V
Darlington Connection
Saturation Voltage,
VCE(sat) ISW=1.0A, ID=50mA, Forced β120 0.45 0.7 V
Darlington Connection
hFE DC Current Gain ISW=1.0A, VCE=5.0V, TA=25℃ 50 75
Collector Off-State
IC(off) VCE=40V 0.01 100 µA
Current
Comparator section
Threshold Voltage TA=25℃ 1.225 1.25 1.275
Vth V
T=0℃~75℃ 1.21 1.29
Threshold Voltage Line
Reg(line) VCC=3.0V to 40V 1.4 6.0 mV
Regulation
Total device
VCC=5.0V to 40V, CT=1.0nF,
ICC Supply Current Pin7=VCC, VPin5＞Vth, Pin2=Gnd, 3.5 mA
remaining pins open
Note: 3.Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient
temperature as possible.
4.If the output switch is driven into hard saturation(non-Darlington configuration) at low switch currents(≤300mA)
and high driver currents(≥30mA), it may take up to 2.0µs for it to come out of saturation. This condition will
shorten the off time at frequencies≥30kHz, and is magnified at high temperatures. This condition does not occur
with a Darlington configuration, since the output switch cannot saturate. If a non-Darlington configuration is
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UNIVERSAL DC/DC CONVERTER
FSP34063
used, the following output drive condition is recommended:
I C output
Forced βof output switch: ≥ 10
I C driver − 7.0mA∗
*The 100Ω resistor in the emitter of the driver device requires about 7.0mA before the output switch conducts.
APPLICATION CIRCUITS
(1) Step-Up Converter
120µH
8 1
180
S Q Q2
Q1
R
7
Rsc Ipk 2
0.24 IN5189
CT
Oscillator
Vin 6 3
Vcc Comparator CT
12V 470µF
1.25V 680
+
Reference pF
- Regulator
5 4
1.0µH
Vout
28V/200mA Vout
R2 56k 470µF Co 100
R1 10k
Optional Filter
Test Conditions Results
Line Regulation Vin=9V to 12V, IO=200mA 20mV=0.035%
Load Regulation Vin=12V, IO=50mA to 200mA 15mV=0.035%
Output Ripple Vin=12V, IO=200mA 500mVPP
Efficiency Vin=12V, IO=200mA 80%
3/10 2007-1-25
UNIVERSAL DC/DC CONVERTER
FSP34063
(2) Step-Down Converter
8 1
S Q Q2
Q1
R
7
Rsc Ipk 2
0.11 CT
Oscillator IN5819
Vin 6 3
25V Vcc Comparator CT
470µF 1.25V 470
+
Reference pF
100µH
- Regulator
5 4
1.0µH
Vout
5.0V/500mA Vout
R2 36k 470µF 100
R1 25k Co
Optional Filter
Test Conditions Results
Line Regulation Vin=12V to 24V, IO=500mA 20mV=0.2%
Load Regulation Vin=24V, IO=50mA to 500mA 5mV=0.05%
Output Ripple Vin=24V, IO=500mA 160mVPP
Efficiency Vin=24V, IO=500mA 82%
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UNIVERSAL DC/DC CONVERTER
FSP34063
(3) Voltage Inverting Converter
8 1
S Q Q2
Q1
R
7
Ipk 2
Rsc
0.26 CT
Oscillator 100µH IN5819
Vin 6 3
4.5V to 6.0V Vcc Comparator
470µF
+ 1.25V
Reference 680
- Regulator pF
5 4
1.0µH
Vout
-12V/100mA Vout
R1 3k 470µF Co 100
R2 50k
Optional Filter
Test Conditions Results
Line Regulation Vin=4.5V to 6.0V, IO=100mA 20mV=0.08%
Load Regulation Vin=5.0V, IO=20mA to 100mA 30mV=0.12%
Output Ripple Vin=5.0V, IO=100mA 500mVPP
Efficiency Vin=5.0V, IO=100mA 60%
5/10 2007-1-25
UNIVERSAL DC/DC CONVERTER
FSP34063
TYPICAL CHARACTERISTICS
Vce(sat) vs Ie Reference Voltage vs Temperature
Vce(sat), Saturation Voltage(V)
1.4 1.26
Reference Voltage(V)
1.2 1.255
1.0 1.25
0.8 1.245
0.6 1.24
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0 10 20 30 40 50 60 70 80 90 100
Ie, Emitter Current(A) Temperature(℃)
Current Sense Voltage vs Standby Supply Current
Temperature vs Supply Voltage
Current Sense Voltage(mV)
440 4.0
Icc, Supply Current (mA)
420 3.5
3.0
400
2.5
380 2.0
360 1.5
1.0
340
0.5
320 0.0
0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40
Temperature(℃) Vcc, Supply Voltage(V)
Output Switch On-Off Time vs
Oscillator Timing Capacitor
1000
Emitter Follower Configuration Output Pin7=Vcc Vcc=5.0V
ton-off, Output Switch On-Off Time(µs)
Saturation Voltage vs Emitter Current Pin5=GND TA=25℃
1.8
100
1.75 Pin1,7,8=Vcc Vcc=2~10V
1.7 Pin3,5=GND TA=25℃
ton
VCE(sat), (V)
1.65
1.6 10
1.55 toff
1.5
1
1.45
1.4
100 300 700 900 1100 1300 1500
Ie(mA) 0.1
0.01 0.1 1 10
CT,Oscilllator Timing Capacitor(nF)
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UNIVERSAL DC/DC CONVERTER
FSP34063
ORDERING INFORMATION
FSP34063XXX
Package: Packing: Temperature Grade:
S: SOP8L Blank: Tube or Bulk Blank: 0~70℃
N: PDIP8L A: Tape & Reel D:-40~85℃
MARKING INFORMATION
(1) SOP8L (2) PDIP8L
Logo Logo
FSP34063 Part number FSP34063 Part number
YYWWXX YYWWXX
Internal code
Internal code
Date code: Date code:
YY: Year (01=2001) YY: Year (01=2001)
WW: Nth week (01~52) WW: Nth week (01~52)
7/10 2007-1-25
UNIVERSAL DC/DC CONVERTER
FSP34063
PACKAGE INFORMATION
(1) SOP8L
H
E
θ
VIEW “A”
7°(4х)
D
7°(4х)
0.015х45°
A2
e
B
A1
VIEW “A”
C
Dimensions In Millimeters Dimensions In Inches
Symbol
Min. Nom. Max. Min. Nom. Max.
A 1.40 1.60 1.75 0.055 0.063 0.069
A1 0.10 0.25 0..004 0.010
A2 1.30 1.45 1.50 0.051 0.057 0.059
B 0.33 0.41 0.51 0.013 0.016 0.020
C 0.19 0.20 0.25 0.0075 0.008 0.010
D 4.80 5.05 5.30 0.189 0.199 0.209
E 3.70 3.90 4.10 0.146 0.154 0.161
e 1.27 0.050
H 5.79 5.99 6.20 0.228 0.236 0.244
L 0.38 0.71 1.27 0.015 0.028 0.050
Y 0.10 0.004
θ 0ο 8ο 0ο 8ο
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UNIVERSAL DC/DC CONVERTER
FSP34063
(2) PDIP8L
E-PIN 0.018inch
E1
E
PIN #1INDENT 0.025 DEEP 0.006-0.008 Inch
15°(4х)
7°(4х)
C
eB
A2
A
L
A1
S e B
B2
B1
Dimensions In Millimeters Dimensions In Inches
Symbol
Min. Nom. Max. Min. Nom. Max.
A 5.33 0.210
A1 0.38 0.015
A2 3.1 3.30 3.5 0.122 0.130 0.138
B 0.36 0.46 0.56 0.014 0.018 0.022
B1 1.4 1.52 1.65 0.055 0.060 0.065
B2 0.81 0.99 1.14 0.032 0.039 0.045
C 0.20 0.25 0.36 0.008 0.010 0.014
D 9.02 9.27 9.53 0.335 0.365 0.375
E 7.62 7.94 8.26 0.300 0.313 0.325
E1 6.15 6.35 6.55 0.242 0.250 0.258
e 2.54 0.100
L 2.92 3.3 3.81 0.115 0.130 0.150
eB 8.38 8.89 9.40 0.330 0.350 0.370
S 0.71 0.84 0.97 0.028 0.033 0.038
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UNIVERSAL DC/DC CONVERTER
FSP34063
DESIGN FORMULA TABLE
Calculation Step-Up Step-Down Voltage-Inverting
ton/toff VOUT + VF − Vin (min) VOUT + VF VOUT + VF
Vin (min) − Vsat Vin (min) − Vsat − VOUT Vin − Vsat
(ton+toff) 1/f 1/f 1/f
toff ton + toff ton + toff ton + toff
ton ton ton
+1 +1 +1
toff toff toff
ton (ton + toff ) − toff (ton + toff ) − toff (ton + toff ) − toff
CT 4.0 ×10−5 ton 4.0 ×10−5 ton 4.0 ×10−5 ton
IPK(switch) 2 I out (max) (ton / toff + 1) 2 I out (max) 2 I out (max) (ton / toff + 1)
RSC 0.3 / I PK ( switch ) 0.3 / I PK ( switch ) 0.3 / I PK ( switch )
L(min) Vin (min) − Vsat Vin (min) − Vsat − Vout Vin (min) − Vsat
t on (max) t on (max) t on (max)
I pk ( switch ) I pk ( switch ) I pk ( switch )
Co I out ton I pk ( switch ) (toff + ton ) I out ton
9 9
Vripple ( pp ) 8Vripple ( pp ) Vripple ( pp )
Vsat=Saturation voltage of the output switch.
VF=Forward voltage drop of the output rectifier.
The following power supply characteristics must be chosen:
Vin-Norminal input voltage
Vout-Desired output voltage, |vout|=1.25(1+ R2/R1)
Iout-Desired output current
fmin-Minimum desired output switching frequency at the selected values of Vin and Io
Vripple(pp)-Desired peak-to-peak output ripple voltage, In practice, the calculated capacitor value will need to be
increased due to its equivalent series resistance and board layout. The ripple voltage should be kept to a low value
since it will directly affect the line and load regulation.
10/10 2007-1-25
