ETC CKD34063D

CKD Technology
CKD34063
DC TO DC CONVERTER CONTROLLER
DESCRIPTION
T he CK D34063 Series is a monolithic control circuit containing the
primary functions required for DC to DC converters. T hese
, 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. T his series was specifically
designed to be incorporated in Step-Down and Step-Up and
Voltage-Inverting applications with a minimum number of external
components.
SOP-8
FEATURES
*Operation from 3.0V to 40V.
*Short circuit current limiting.
*Low standby current.
*Output switch current of 1.5A without external
transistors.
*Frequency of operation from 100Hz to 100kHz.
*Step-up, step-down or inverting switch regulators.
*Pin to pin compatible with MC34063
DIP-8
BLOCK DIAGRAM
E
SWITCH
COLLECTOR
T2
S
1
Q
T1
SWITCH
EMITTER
8
DRIVE
COLLECTOR
7
Ipeak
SENSE
6
Vcc
R
D
C
2
Is
A
TIMING
CAPACITOR
3
GND
4
CT
OSCILLATOR
COMP.
5
1.25Vref
B
COMPARATOR
INVERTING INPUT
PIN CONFIGURATION
Switch
Collector
1
8
Driver
Collector
Switch
Emitter
2
7
Lpk Sense
Timing
Capacitor
3
6
Vcc
Gnd
4
5
Comparator
Inverting input
ORDERING INFOR MATION
CKD34063D
Operating
Temperature Range
TA = 0°C to +70°C
CKD34063S
TA = 0°C to +70°C
Device
Package
PDIP-8
SOP-8
1
CKD34063
ELECTRICAL CHARACTERISTICS(VCC=5.0V, TA = Tlow to Thigh [Note 3], unless otherwise specified.)
Characteristics
Symbol
OSCILLATOR
fosc
Frequency (Vpin5 = 0 V, CT = 1.0nF, TA = 25°C)
lchg
Charge Current (VCC =5.0 V to 40 V, TA = 25°C)
ldischg
Discharge Current (VCC =5.0 V to 40 V, TA = 25°C )
Discharge to Charge Current Ratio (Pin7 to VCC, TA = 25°C) ldischg / lchg
Vipk(sense)
Current Limit Sense Voltage (Ichg = ldischg, TA = 25 °C)
OUTPUT SWITCH (Note 4)
Saturation Voltage, Darlington Connection (Note 5)
VCE(sat)
(ISW = 1.0 A, Pins 1,8 connected)
Saturation Voltage, Darlington Connection
VCE(sat)
(ISW = 1.0 A, Rpin 8 = 82 Ω to VCC, Forced β = 20)
hFE
DC Current Gain (ISW = 1.0 A, VCE =5.0 V, TA = 25°C)
Collector Off-State Current (VCE = 40 V)
IC(off)
COMPARATOR
Threshold Voltage
TA = 25 °C
Vth
TA = Tlow to Thigh
Threshold Voltage Line Regulation (VCC = 3.0 V to 40 V)
Regline
Input Bias Current (Vin = 0 V)
IIB
TOTAL DEVICE
Supply Current (VCC = 5.0 V to 40 V, CT = 1.0 nF, Pin 7 = VCC,
ICC
Vpin 5 > Vth, Pin 2 = Gnd, remaining pins open)
Min
Typ
Max
Unit
24
22
140
250
250
33
33
200
300
300
42
42
260
350
350
kHz
uA
uA
mV
mV
-
1.0
1.3
V
-
0.45
0.7
V
50
-
120
0.01
100
uA
1.23
1.25 1.27
1.2225
1.2475
1.4
5.0
-40
-400
-
2.5
V
mV
nA
4.0
mA
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage
VCC
40
Vdc
Comparator Input Voltage Range
VIR
-0.3 to +40
Vdc
Switch Collector Voltage
VC(switch)
40
Vdc
Switch Emitter Voltage (Vpin 1 = 40 V)
VE(switch)
40
Vdc
Switch Collector to Emitter Voltage
VCE(switch)
40
Vdc
Driver Collector Voltage
VC(driver)
40
Vdc
Driver Collector Current (Note 1)
IC(driver)
100
MA0
Switch Current
ISW
1.5
A
Power Dissipation and Thermal Characteristics
PD
1.0
W
TA = 25 °C
100
°C / W
R θJA
Thermal Resistance
Operating Junction Temperature
TJ
+150
°C
Operating Ambient Temperature Range
TA
0 to +70
°C
Storage Temperature Range
Tstg
-65 to +150
°C
NOTE :
1. Maximum package power dissipation limits must be observed.
2. ESD data available upon request.
3. Tlow = 0 °C , Thigh = +70 °C
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to
ambient temperature as possible.
5.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 2.0uS for it to come out of saturatiion.
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 used, the following output drive condition is recommended:
Forced β of output switch:
*The 100 Ω resistor in the emitter of the driver device requires about 7.0 mA before the output switch
conducts.
CKD Technology
2
CKD34063
TYPICAL PERFORMANCE CHARACTERISTICS
1000
Standby Supply Current vs. Supply Voltage
2
ICC, Supply Current (mA)
VCC=5V
VIPK=VCC
PIN 5=GND
100
ON TIME
10
OFF TIME
1.6
CT=1nF
VIPK=VCC
PIN 2=GND
1.2
0.8
0.4
1
tON-OFF Output Switch ON-OFF Time ( S)
Output Switch ON-OFF Time vs. Oscillator
Timing Capacitor
1
0.1
10
0
100
0
5
10
25
20
30
IPK Threshold Voltage vs Temperature
VFB, Threshold Voltage vs Temperature
350
1.3
VCC = 5V,
CT = 1nF
PIN 2 = GND
1.28
VCC = 5V
CT = 1nF
PIN 5 = GND
340
VIPK, Threshold Voltage (mV)
VFB, Threshold Voltage (V)
15
VCC, Supply Voltage (V)
CT, Oscillator Timing Capacitor (nF)
1.26
1.24
1.22
330
320
310
300
290
280
270
260
1.2
250
0
10
20
30
40
50
60
70
80
0
10
20
30
Temperature ( °C)
60
70
80
Common-Emitter Configuration Output Switch
Saturation Voltage vs Collector Current
1.8
1.4
VCC = 5V
PIN 1, 7, 8 = VCC
PIN 3, 5 = GND
VCE(SAT), Saturation Voltage (V)
VCE(SATE) Saturation Voltage (V)
50
Temperature ( °C)
Emmiter-Follower Configuration Output Switch
Saturation Voltage vs Emmiter Current
1.7
40
1.6
1.5
1.4
1.3
VCC
5V
VCC == 5.0V
PIN
= VCC
PIN 77 =VCC
PINS2,2,3,3,55 == GND
GND
PIN
Forced Beta = 20
1.2
1.0
Darlington Connection
0.8
0.6
0.4
Forced Beta = 20
0.2
0
1.2
0
0.5
1
1.5
0
IE, Emitter Current (A)
0.5
1
1.5
IC, Collector Current (A)
Note 4. Low duty cycle pulse techniques are used during test to maintain junction
temperature as close to ambient temperature as possible.
CKD Technology
3
CKD34063
Figure 1. Voltage Inverting Converter
Test
Line Regulation
Load Regulation
Output Ripple
Short Circuit Current
Efficiency
Output Ripple With Optional Filter
Condition
Vin = 4.5 V to 6.0 V, Io = 100 mA
Vin = 5.0 V, Io = 10 mA to 100 mA
Vin = 5.0 V, Io = 100 mA
Vin = 5.0 V, RL = 0.1 Ω
Vin = 5.0 V, Io = 100 mA
Vin = 5.0 V, Io = 100 mA
Results
3.0 mV = ± 0.012%
0.022 V = ± 0.09%
500 mVpp
910 mA
62.2%
70 mVpp
Figure 2. External Current Boost Connections for Ic Peak Greater than 1.5 A
2a. External NPN Switch
CKD Technology
2b. External PNP Saturated Switch
4
CKD34063
Figure 3. Step-Down Converter
Test
Line Regulation
Load Regulation
Output Ripple
Short Circuit Current
Efficiency
Output Ripple With Optional Filter
Condition
Vin = 15 V to 25 V, Io = 500 mA
Vin = 25 V, Io = 50 mA to 500 mA
Vin = 25 V, Io = 500 mA
Vin = 25 V, RL = 0.1 Ω
Vin = 25 V, Io = 500 mA
Vin = 25 V, Io = 500 mA
Results
12 mV = ± 0.12%
3.0 mV = ± 0.03%
120 mVpp
1.1 A
83.7%
40 mVpp
Figure 4. External Current Boost Connections for Ic Peak Greater than 1.5 A
4a. External NPN Switch
CKD Technology
4b. External PNP Saturated Switch
5
CKD34063
Figure 5. Step-Up Converter
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
Output Ripple With Optional Filter
Condition
Vin = 8.0 V to 16 V, Io = 175 mA
Vin = 12 V, Io = 75 mA to 175 mA
Vin = 12 V, Io = 175 mA
Vin = 12 V, Io = 175 mA
Vin = 12 V, Io = 175 mA
Results
30 mV = ± 0.05%
10 mV = ± 0.017%
400 mVpp
87.7%
40 mVpp
Figure 6. External Current Boost Connections for Ic Peak Greater than 1.5 A
6a. External NPN Switch
6 b. External NPN Saturated Switch
(See Note 5 )
Note 5: If the output switch is driven into hard saturation (non-Darlington configuration) at low switch
currents ( ≤ 300 mA) and high driver currents ( ≥ 30 mA), it may take up to 2.0 us to come out of
saturation. This condition will shorten the off time at frequencies ≥ 30 kHz, 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 used, the following output drive condition is
recommended.
CKD Technology
6
Packaging Information
CKD34063D
Data Sheet
#5
0.2
5
8-DIP-300
+0
- 0 .10
.05
0-15
7.62
6.40
± 0.20
#8
2.54
(0.79)
0.46 ± 0.10
5.08 MAX
± 0.20
± 0.30
9.20
3.30
9.60 MAX
3.40 ± 0.20
#4
0.33 MIN
#1
1.52 ± 0.10
NOTE :
Dimensions are in millimeters.
8-DIP-300 Package Dimensions
CKD Technology
7
CKD34063S
PACKAGING INFORMATION
DATA SHEET
0-8
#4
0.15
5.13 MAX
4.87
± 0.20
+ 0.10
- 0.05
1.80 MAX
#1
0.50 ± 0.20
8-SOP-150
5.72
3.86 ± 0.20
#5
1.45 ± 0.20
5.99
± 0.15
#8
1.27
(0.56)
0.41 ± 0.10
NOTE :
0.1-0.25 MIN
0.10 MAX
Dimensions are in millimeters.
8-SOP-150 Package Dimensions
CKD Technology
8