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PDF EX34063 Data sheet ( Hoja de datos )
| Número de pieza | EX34063 | |
| Descripción | Monolithic control circuit | |
| Fabricantes | Excellent Semiconductor | |
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Excellent Semiconductor
EX34063
FEATURES
n operation from 3.0 to 40V input
n short circuit current limiting
n low standby current
n output switch current of 1.5A
n output voltage adjustable
n frequency of operation from 100Hz to
100KHz
n step-up, step-down or inverting switching
regulators
n current limiting
DIP-8
SOP-8
PRODUCT DESCRIPTION
The EX34063 is a monolithic control circuit containing the primary functions required for
DC-to-DC converters. This device consists of an internal temperature compensated reference,
comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current
output switch.
This device was specifically designed to be incorporated in Step-Down and Step-Up and
Voltage-inverting applications with a minimum number of external components.
PIN CONFIGURATION
Switch
Collector
Switch
Emitter
Timing
Capacitor
Gnd
Driver
Collector
IPKSENSE
Vcc
Comparator
Inverting
Input
ORDERING INFORMATION
Part
Number
Operating
Temperature
Range
Package
Type
EX34063 0~+70
DIP- 8
EX34063S 0~+70 SOP- 8
1/8
1 page  
Excellent Semiconductor
EX34063
8
180
7
Rsc
0.22
Vin
12V
.
+
6
100
Vcc
5
R1 2.2K
170uH
L
1
S Q Q2
R Q1
2
Ipk
Oscillator
CT
Comparator
+
-
1N5819
1.25V
Reference
Regulator
3
CT
1500pF
4
Vout
R2 28V/175mA
>
.
47K
+
330 Co
1.0uH
100
. Vout
+
Test
Line Regulation
Load Regulation
Output Ripple
Effciency
Output Ripple With Optional Filter
Conditions
Vin=8.0 V to 16V, 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
Fig 7. Step-Up Converter
Optional Filter
Results
30 mV= 0.05%
10 mV= 0.017%
400 mVpp
87.7%
40 mVpp
8-1. External NPN Switch
8-2. External NPN Saturated Switch(See Note 5)
Fig 8. External Current Boost Connections for IC Peak Greater than 1.5A
5/8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet EX34063.PDF ] | |
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