|
|
PDF LTC4090-3 Data sheet ( Hoja de datos )
| Número de pieza | LTC4090-3 | |
| Descripción | USB Power Manager | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LTC4090-3 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
FEATURES
nn Seamless Transition Between Power Sources:
Li-Ion Battery, USB, and 6V to 36V Supply (60V Max)
nn 2A Output High Voltage Buck Regulator with
Bat-Track™ Adaptive Output Control
nn 3.95V Float Voltage Improves Battery Life Span and
High Temperature Safety Margin
nn Internal 215mΩ Ideal Diode Plus Optional External
Ideal Diode Controller Provides Low Loss
PowerPath™ When External Supply/ USB Not Present
nn Load Dependent Charging from USB Input Guaran-
tees Current Compliance
nn Full Featured Li-Ion Battery Charger
nn 1.5A Maximum Charge Current with Thermal Limiting
nn NTC Thermistor Input for Temperature Qualified
Charging
nn Tiny (3mm × 6mm × 0.75mm) 22-Pin DFN Package
APPLICATIONS
nn Embedded Automotive Accessories
nn Personal Navigation Devices
nn Other USB-Based Handheld Products
LTC4090-3
USB Power Manager with
2A High Voltage Bat-Track
Buck Regulator
DESCRIPTION
The LTC®4090-3 is a USB power manager plus high voltage
Li-Ion/Polymer battery charger. The device controls the
total current used by the USB peripheral for operation and
battery charging. Battery charge current is automatically
reduced such that the sum of the load current and the
charge current does not exceed the programmed input
current limit. The LTC4090-3 also accommodates high
voltage power supplies, such as 12V AC/DC wall adapters,
Firewire, or automotive power.
The LTC4090 provides a Bat-Track adaptive output that
tracks the battery voltage for high efficiency charging
from the high voltage input. This 3.95V version of the
standard LTC4090 is intended for applications which
have extended battery lifetime requirements or those that
require high temperature (>60°C) operation or storage
under these conditions. A reduced float voltage will trade
off initial cell capacity for the benefit of increased capacity
retention over the life of the battery. The charge current is
programmable and an end-of-charge status output (CHRG)
indicates full charge.
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
and Bat-Track, PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All
other trademarks are the property of their respective owners.
TYPICAL APPLICATION
HIGH (7.5V-36V)
VOLTAGE INPUT
5V WALL
ADAPTER
USB
59k
270pF
HVIN
1µF
IN
4.7µF
VC
TIMER
BOOST
0.47µF
SW
LTC4090-3
HVOUT
HVPR
OUT
BAT
6.8µH
22µF
1k
LOAD
4.7µF
0.1µF
RT CLPROG
40.2k
2k
GND PROG
100k +
Li-Ion BATTERY
VOUT (TYP)
VBAT + 0.3V
5V
VBAT
AVAILABLE INPUT
HV INPUT
USB ONLY
BAT ONLY
40903 TAO1
For more information www.linear.com/LTC4090-3
LTC4090-3 High Voltage Battery
Charger Efficiency
90 FIGURE 12 SCHEMATIC
80
WITH RPROG = 52k
NO OUTPUT LOAD
70
60
50
40
HVIN = 8V
30
HVIN = 12V
HVIN = 24V
HVIN = 36V
20
2.0 2.5 3.0 3.5 4.0 4.5
VBAT (V)
40903 TA01b
40903fb
1
1 page  
LTC4090-3
E LECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at
RPROG = 100k, RCLPROG = 2k and SUSP = 0V, unless
ToAth=er2w5i°sCe.
HVIN =
noted.
HVEN
=
12V,
BOOST
=
17V,
VIN
=
HPWR
=
5V,
VBAT
=
3.7V,
SYMBOL
NTC
IVNTC
VVNTC
INTC
VCOLD
VHOT
VDIS
PARAMETER
VNTC Pin Current
VNTC Bias Voltage
NTC Input Leakage Current
Cold Temperature Fault Threshold
Voltage
Hot Temperature Fault Threshold
Voltage
NTC Disable Threshold Voltage
CONDITIONS
VNTC = 2.5V
IVNTC = 500µA
NTC = 1V
Rising NTC Voltage
Hysteresis
Falling NTC Voltage
Hysteresis
Falling NTC Voltage
Hysteresis
MIN TYP
MAX UNITS
l 1.4
l 4.4
l 75
2.5
4.85
0
0.738 • VNTC
0.02 • VNTC
0.326 • VNTC
0.015 • VNTC
100
35
3.5
±1
125
mA
V
µA
V
V
V
V
mV
mV
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC4090-3 is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperatures will exceed 110°C when overtemperature protection is
active. Continuous operation above the specified maximum operating
junction temperature may result in device degradation or failure.
Note 4: VCC is the greater of VIN, VOUT, and VBAT
Note 5: Guaranteed by long term current density limitations.
Note 6: Total input current is equal to this specification plus 1.002 • IBAT
where IBAT is the charge current.
Note 7: Accuracy of programmed current may degrade for currents
greater than 1.5A.
Note 8: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
Note 9: Absolute Maximum Voltage at HVIN and HVEN pins is for
nonrepetitive 1 second transients; 40V for continuous operation.
TYPICAL PERFORMANCE CHARACTERISTICS
VFLOAT Load Regulation
4.05 RPROG = 34k
4.00
3.95
3.90
3.85
3.80
3.75
0 200 400 600 800 1000
IBAT (mA)
40903 G01
Battery Regulation (Float)
Voltage vs Temperature
3.970 VIN = 5V
3.965 IBAT = 2mA
3.960
3.955
3.950
3.945
3.940
3.935
3.930
–50 –25
0
25 50 75 100
TEMPERATURE (°C)
40903 G02
For more information www.linear.com/LTC4090-3
40903fb
5
5 Page 
BLOCK DIAGRAM
LTC4090-3
10 HVIN
10 HVEN
RT1
RC
CC
10 RT
SYNC
10
10 VC
CF
INTERNAL
REFERENCE
SOFT-START
VC CLAMP
PG
10
RCLPROG
IN
10
IIN 1V +
1000
CL
CLPROG
22
–
HPWR 500mA/100mA
13
2µA
BOOST
+
IL
–
OSCILLATOR
200kHz - 2.4MHz
–
+ 2.8V
+
RQ
– SQ
–
GM+
+
VSET
3.6V
+– 350mV
CURRENT
CONTROL
SOFT-START
ILIM
DIE
TEMP 105°C
CURRENT LIMIT
IN ILIM CNTL
ENABLE
–+
TA
IN OUT BAT
DRIVER
+–
75mV (RISING)
25mV (FALLING)
–
+
+
4.25V (RISING)
3.15V (FALLING)
–
OUT
CC/CV REGULATOR
CHARGER
ENABLE
30mV
IDEAL
DIODE
BAT
C2
Q1 SW L1
D1
HVOUT
C1
HVPR
19
20mV –
+ EDA
OUT 21
GATE
21
BAT 21
RPROG
PROG
23
15 VNTC
10k
NTC
14
10k T
+
CHG
–
1V
– TOO
COLD
+
– TOO
HOT
+
CHARGE CONTROL
ICHG
SOFT-START2
VOLTAGE DETECT
UVLO
NTCERR
CONTROL LOGIC
BAT UV
RECHRG
HOLD
RESET
+
– 0.25V
+
2.9V
BATTERY
UVLO
–
+
3.85V
RECHARGE
–
OSCILLATOR
CLK
COUNTER
STOP
TIMER
21
CHRG 18
CTIMER
+
0.1V –
NTC ENABLE
GND
16
2µA
SUSP
11
EOC
C/10
40903 BD
For more information www.linear.com/LTC4090-3
40903fb
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LTC4090-3.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LTC4090-3 | USB Power Manager | Linear Technology |
| LTC4090-5 | USB Power Manager | Linear Technology |
| 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 |