|
|
PDF ILC6383 Data sheet ( Hoja de datos )
| Número de pieza | ILC6383 | |
| Descripción | 1-Cell to 3-Cell Boost DC-DC Converter with True Load Disconnect/ 3.3V/ 5V or Adjustable Output | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ILC6383 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
|
No Preview Available !
www.fairchildsemi.com
ILC6383
1-Cell to 3-Cell Boost DC-DC Converter with True
Load Disconnect, 3.3V, 5V or Adjustable Output
Features
• Guaranteed start up in PWM at 0.9V input
• Synchronous rectification requires no external diode
• True load disconnect from battery input in shutdown
• Up to 75mA at 3.3V and 40mA at 5V from 1V input
• Up to 375mA at 3.3V and 300mA at 5V from 3V input
• Peak efficiency > 90%
• 1µA battery input current in shutdown (with VOUT = 0V)
• Internal Oscillator frequency: 300kHz to ±15%
• ILC6383: Fixed 3.3V or 5V output
• ILC6383-ADJ: Adjustable output to 6V maximum
• Low battery detector with 100ms transient rejection delay
• Powergood output flag when VOUT is in regulation
Applications
• Cellular Phones, Pagers
• Palmtops, PDAs and portable electronics
• High efficiency 1V step up converters
Description
The ILC6383 series of step-up DC-DC converters operate
from 1-cell to 3-cell input. They are direct replacement for
ILC6382, in applications where SYNC pin is not used. The
PFM or PWM operating mode is user selectable through
SEL pin connected to ground or left open, respectively. The
choice should be dependent upon the current to be delivered
to the load: PFM is recommended for input voltage higher
than 1.5V and loads below 100mA, while PWM is recom-
mended for more than 50mA load current and in noise sensi-
tive applications. In shutdown mode, the device allows true
load disconnect from battery input. Designed for wireless
communications applications, the oscillator frequency is set
at 300kHz with no harmonics at sub 20kHz audio band or at
455kHz IF band.
Internal synchronous rectification and externally selectable
PFM/PWM mode of operation allows the selection of the
best efficiency at light or full load. The ILC6383 is capable
of delivering 75mA at 3.3V output from a single cell input.
The ILC6383-XX offers 3.3V or 5V fixed output voltage
while the ILC6383-ADJ allows adjustable output voltage to
6V maximum. Output voltage accuracy is ±3.5% over full
operating temperature range.
Additional features include power good output (POK) and an
internal low battery detector with 100ms transient rejection
delay. The device will reject low battery input transients
under 100ms in duration. The ILC6383 series is available in
a space saving eight lead micro SOP (MSOP-8) package.
Typical Applications
CIN
47µF
+
L
VIN
1 to 3-cell
ON
OFF
15µH
R5
R6
ILC6383-XX
1 LX VOUT 8
2 VIN
GND 7
3 LBI/SD LBO 6
4 SEL POK 5
PWM
PFM
MSOP-8
+ 47µF VOUT
COUT
Low Battery
Detector Output
Power Good Output
Figure 1. ILC6383CIR-XX
CIN
47µF
+
L
VIN
1 to 3-cell
ON
OFF
15µH
R5
R6
ILC6383-ADJ
1 LX VOUT 8
2 VIN
GND 7
3 LBI/SD LBO 6
4 SEL
VFB 5
PWM
PFM
MSOP-8
+ COUT
47µF
VOUT
R1
R2
VOUT = 1.25 (1+R1/R2)
Figure 2. ILC6383CIR-ADJ
REV. 1.2.6 6/13/02
1 page  
PRODUCT SPECIFICATION
ILC6383
General Electrical Characteristics (continued)
Parameter
Symbol
Conditions
Min. Typ.
Max.
Units
Input Voltage Range
Battery Input Current
in Load Disconnect
Mode
VIN
IIN(SD)
VOUT = VOUT(nominal) ± 4%
IOUT = 10mA
VLBI/SD < 0.4V, VOUT = 0V
(short circuit)
0.9 VOUT(nominal) V
1 +0.5V
1 10 µA
Switch on resistance
Rds(on)
N-Channel MOSFET
P-Channel MOSFET
400 mΩ
750
Oscillator Frequency
LBI Input Threshold
fOSC
VREF
255
1.175
1.150
300
1.250
345
1.325
1.350
kHz
Input Leakage Current I LEAK
Pins LB/SD, SEL and VFB,
(Note 3)
200 nA
LBI Hold Time
tHOLD(LBI) (Note 4)
100 120
mS
Notes:
1. Absolute maximum ratings indicate limits which, when exceeded, may result in damage to the component. Electrical
specifications do not apply when operating the device outside its rated operating conditions.
2. Specified min/max limits are production tested or guaranteed through correlation based on statistical control methods.
Measurements are taken at constant junction temperature as close to ambient temperature as possible using low duty cycle
pulse testing.
3. Guaranteed by design.
4. In order to get a valid low-battery-output (LBO) signal, the input voltage must be lower than the low-battery-input (LBI)
threshold for a duration greater than the low battery hold time (tHOLD(LBI)). This feature eliminates false triggering due to
voltage transients at the battery terminal.
REV. 1.2.6 6/13/02
5
5 Page 
ILC6383
PRODUCT SPECIFICATION
Typical Performance Characteristics ILC6383CIR-33 (VOUT = 3.3 V)
Unless otherwise specified: TA = 25°C, CIN = 47µF, COUT = 47µF, L = 15µH.
Efficiency (PWM Mode)
1
VIN = 2V
0.9
VIN = 1.5V
0.8
VIN = 2.5V
0.7
0.6
30
50 100 150 200 250 300 350 400
Load Current (mA)
0.9
0.85
Efficiency (PFM Mode)
VIN = 1.5V
VIN = 2V
VIN = 2.5V
0.8
0.75
0.7
0.65
1
5 10 15 20 25 30
Load Current (mA)
Load Regulation (PWM Mode)
3.42
3.4
3.38
3.36
3.34
3.32
VIN = 2 . 5 V
3.3
3.28
3.26
3.24 VIN = 1.5V
VIN = 2 V
3.22
3.2
3.18
50 100 150 200 250 300 350 400
Load Current (mA)
3.36
3.34
3.32
3.3
3.28
3.26
3.24
3.22
3.2
1
Load Regulation (PFM Mode)
VIN = 3V
VIN = 2V
VIN = 1.5V
5 10 15 20
Load Current (mA)
25
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1
1
Start-up Input Voltage vs
Output current in PFM
10 20 30 40
Load Current (mA)
50
11 REV. 1.2.6 6/13/02
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet ILC6383.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ILC6380 | SOT-89 STEP-UP DUAL-MODE SWITCHER WITH SHUTDOWN |  Impala Linear Corporation |
| ILC6382 | 1-CELL TO 3-CELL BOOST WITH TRUE LOAD DISCONNECT/ 3.3V/ 5V OR ADJUSTABLE OUTPUT | Impala Linear Corporation |
| ILC6383 | 1-Cell to 3-Cell Boost DC-DC Converter with True Load Disconnect/ 3.3V/ 5V or Adjustable Output | Fairchild Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |