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PDF 1563CN Data sheet ( Hoja de datos )
| Número de pieza | 1563CN | |
| Descripción | AIC1563CN | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de 1563CN (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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FEATURES
3V to 30V Input Voltage Operation.
Internal 2A Peak Current Switch.
1.5A Continuous Output Current.
Bootstrapped Driver.
High Side Current Sense Capability.
High Efficiency (up to 90%).
Internal ±2% Reference.
Low Quiescent Current at 1.6mA.
Frequency Operation from 100Hz to 100KHz.
APPLICATIONS
Constant Current Source for Battery Chargers.
Saver for Cellular phones.
Step-Down DC-DC Converter Module.
AIC1563
Versatile DC/DC Converter
DESCRIPTION
The AIC1563 is a monolithic control circuit
containing the primary functions required for DC
to DC converters and highside-sensed constant
current source. The device consists of an inter-
nal temperature compensated reference, com-
parator, controlled duty cycle oscillator with an
active current sense circuit, bootstrapped driver,
and high current output switch. This device is
specifically designed to construct a constant
current source for battery chargers with a mini-
mum number of external components. Boot-
strapped driver can drive the NPN output switch
to saturation for higher efficiency and less heat
dissipation. The AIC1563 can deliver 1.5A con-
tinuous current without requiring a heat sink.
TYPICAL APPLICATION CIRCUIT
D2
R2
120
R1
1K
3C
1µF
1N1418
VIN
+ 220µF
C1
CT
DC
DE
CF
GND
BOOST
IS
VCC
FB
AIC1563
220µH
D3
1N5819 *RS
L
D1
1N5821
220µF
+
CO
+
C5
10µF
IO
RB
RA 33K
5.6K
*IO=300mV/RS
(%)
100
90
80
70
0
VIN= 1 6 V, VO= 1 2 V
VIN= 1 6 V, V O= 8 V
0.5 1
1.5
Io (A)
Efficiency vs Output Current
2
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1563-01 Jan 30, 01
TEL: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
1
1 page  
AIC1563
www.DataSheet4U.com
BLOCK DIAGRAM
DC 1
Q2
Q1
DE 2
80
QS
R
CF 3
GND 4
CT Is
Oscillator
1.25V
Reference
Voltage
Comparator
+
-
8 BOOST
7 IS
6
VCC
5
FB
AIC1563
PIN DESCRIPTIONS
PIN 1: DC - 2A switch collector.
PIN 2: DE - Darlington switch emitter.
PIN 3: CF - Oscillator timing capacitor.
PIN 4: GND - Power ground.
PIN 5: FB - Feedback comparator inverting input.
PIN 6: VCC - Power supply input.
PIN 7: IS
- Highside current sense input.
VCC - VIS=300mV.
PIN 8: BOOST-Bootstrapped driver collector.
APPLICATION INFORMATIONS
DESIGN FORMULA TABLE
CALCULATION
t ON
t OFF
(tON + tOFF) MAX
CT
STEP-DOWN
VOUT + VF
V - V - VIN(MIN) SAT OUT
1
FMIN
4x10-5tON
IC (SWITCH)
2IOUT(MAX)
RS
L(MIN)
Co
0.3/IC(SWITCH)
V - V - VIN(MIN)
SAT
( I )tC(SWITCH)
OUT
ON(MAX)
I ( t + tC( SWITCH)
ON
OFF )
8 VRIPPLE (P - P )
STEP-UP
V + V VOUT
-F IN(MIN)
V - VIN(MIN)
SAT
1
FMIN
4 x 10-5tON
2IOUT(MAX)
(
t ON + t OFF )
t OFF
0.3/ IC (SWITCH)
V - VIN(MIN)
SAT
( I )tC(SWITCH)
ON(MAX)
I tOUT ON
VRIPPLE(P - P)
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet 1563CN.PDF ] | |
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