GP34063 Datasheet PDF - GTM

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GP34063
GTM

Part Number GP34063
Description DC to DC Converter Controller
Page 6 Pages


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GP34063
DC TO DC CONVERTER CONTROLLER
ISSUED DATE :2004/02/10
REVISED DATE :2005/07/01D
Description
The GP34063 is a monolithic regulator subsystem, intended for use as DC to DC converter. This device contains a temperature
compensated band gap reference, a duty-cycle control oscillator, driver and high current output switch. It can be used for step down,
step-up or inverting switching regulators as well as for series pass regulators.
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.
Package Dimensions
D
GAUGE PLANE
SEATING PLANE
ZZ
be
b
SECTION Z - Z
DIP-8
Pin Configuration & Block Diagram
REF.
A
A1
A2
b
b1
b2
b3
c
Millimeter
Min. Max.
- 0.5334
0.381
-
2.921
4.953
0.356
0.559
0.356
0.508
1.143
1.778
0.762
1.143
0.203
0.356
REF.
c1
D
E
E1
e
HE
L
Millimeter
Min. Max.
0.203
0.279
9.017
10.16
6.096
7.112
7.620
8.255
2.540 BSC
- 10.92
2.921
3.810
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Absolute Maximum Ratings at Ta = 25
Parameter
Symbol
Operating junction temperature
Tj
Operating ambient temperature range
Ta
Storage Temperature range
Tstg
Supply Voltage
Vcc
Comparator input voltage range
Vi(comp)
Switch collector voltage
Vc(sw)
Switch Emitter voltage
Ve(sw)
Switch collector to Emitter voltage
Vce(dr)
Switch current
Isw
Power Dissipation
Pd
Thermal Resistance
R JA
VALUE
150
0 ~ 70
-65 ~ 150
40
-0.3 ~ +40
40
40
40
1.5
1250
100
ISSUED DATE :2004/02/10
REVISED DATE :2005/07/01D
Unit
V
V
V
V
V
A
mW
/W
Electrical Characteristics
Parameter
Oscillator
Frequency
Charging Current
Discharging Current
Discharge to Charge Current Ratio
Current limit Sense Voltage
Output Switch
Saturation Voltage 1(note)
Saturation Voltage 2(note)
(0 TA 70 ,Vcc=5V unless otherwise specified)
SYMBOL
Test Conditions
Min
fosc
lchg
ldischg
K
Vsense
VPin5=0V, CT=1.0nF, Ta=25
Vcc = 5 to 40, Ta = 25
Vcc = 5 to 40, Ta = 25
Pin7 to Vcc, Ta = 25
Ichg = idschg, Ta = 25
24
22
140
5.2
250
Vce(sat)1 Isw = 1A,Vc(driver) = Vc(sw)
Vce(sat)2 Isw = 1A,Vc(driver) = 50mA
DC Current Gain(note)
Gi(DC) Isw = 1A,Vce = 5V, Ta = 25
50
Collect Off State Current (note)
Comparator
Threshold Voltage
Threshold Voltage Line Regulation
Input Bias Current
Total Device
Supply Current
C(off) Vce = 40V, Ta = 25
Vcc=5V, Ta = 25
Vth
Vth
Ibias
Vcc = 3 ~ 40V
Vi = 0V
34063A
34063B
34063C
1.241
1.237
1.225
Vcc = 5 ~ 40V,
Ct = 0.001,
Icc Pin7 to Vcc,
Vc > Vth,
Pin2 = GND
Note Output switch tests are performed under pulsed conditions to minimize power dissipation.
Typ.
42
31
190
6.1
300
0.95
0.45
180
0.01
1.25
1.25
1.25
2
50
2.7
Max.
48
42
260
7.5
350
1.3
0.7
100
1.259
1.262
1.275
5
400
4.0
Unit
kHz
uA
uA
mV
V
V
uA
V
V
V
mV
nA
mA
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Characteristics Curve
ISSUED DATE :2004/02/10
REVISED DATE :2005/07/01D
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Application Information
Step-Up Converter
ISSUED DATE :2004/02/10
REVISED DATE :2005/07/01D
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
Output Ripple With Optional Filter
Conditions
Vin = 8V to 16V, Io = 175mA
Vin = 12V, Io = 75mA to 175mA
Vin = 12V,Io = 175mA
Vin = 12V, Io = 175mA
Vin = 12V, Io = 175mA
External Current Boost Connections for Ic Peak Greater than 1.5A
Results
30mV = ± 0.05%
10mV = ± 0.017%
400mVp-p
87.7%
40mVp-p
External NPN Switch
External NPN Saturated Switch (NOTE)
NOTE If the switch is driven into hard saturation (non-Darlington configuration) at low switch currents ( 300mA) and high driver currents ( 30mA) it may
take up to 2.0 us 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 used, the
following output drive condition is recommended.
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