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LT1510-5CGN

Description
Switching Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCd/NiMH 1500mA 2V to 20V 16-Pin SSOP N
CategoryPower/power management    The power supply circuit   
File Size264KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric View All

LT1510-5CGN Overview

Switching Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCd/NiMH 1500mA 2V to 20V 16-Pin SSOP N

LT1510-5CGN Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerADI
package instructionSSOP-16
Reach Compliance Codenot_compliant
ECCN codeEAR99
Is SamacsysN
Other featuresLG-MAX
Adjustable thresholdYES
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G16
JESD-609 codee0
length4.8895 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals16
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height1.748 mm
Maximum supply voltage (Vsup)7.8 V
Minimum supply voltage (Vsup)6.2 V
Nominal supply voltage (Vsup)7 V
surface mountYES
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.635 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width3.899 mm
Base Number Matches1
LT1510/LT1510-5
Constant-Voltage/
Constant-Current Battery Charger
FEATURES
s
s
s
s
s
s
s
s
s
Charges NiCd, NiMH and Lithium-Ion Batteries ––
Only One
1
/
10
W Resistor Is Needed to Program
Charging Current
High Efficiency Current Mode PWM with 1.5A
Internal Switch and Sense Resistor
3% Typical Charging Current Accuracy
Precision 0.5% Voltage Reference for Voltage
Mode Charging or Overvoltage Protection
Current Sensing Can Be at Either Terminal of
the Battery
Low Reverse Battery Drain Current: 3µA
Charging Current Soft Start
Shutdown Control
500kHz Version Uses Small Inductor
plest, most efficient solution to fast-charge modern re-
chargeable batteries including lithium-ion (Li-Ion), nickel-
metal-hydride (NiMH)* and nickel-cadmium (NiCd)* that
require constant-current and/or constant-voltage charg-
ing. The internal switch is capable of delivering 1.5A DC
current (2A peak current). The 0.1Ω onboard current
sense resistor makes the charging current programming
very simple. One resistor (or a programming current from
a DAC) is required to set the full charging current (1.5A) to
within 5% accuracy. The LT1510 with 0.5% reference
voltage accuracy meets the critical constant-voltage charg-
ing requirement for lithium cells.
The LT1510 can charge batteries ranging from 2V to 20V.
Ground sensing of current is not required and the battery’s
negative terminal can be tied directly to ground. A saturat-
ing switch running at 200kHz (500kHz for LT1510-5) gives
high charging efficiency and small inductor size. A block-
ing diode is not required between the chip and the battery
because the chip goes into sleep mode and drains only 3µA
when the wall adaptor is unplugged. Soft start and shutdown
features are also provided. The LT1510 is available in a 16-pin
fused lead power SO package with a thermal resistance of
50°C/W, an 8-pin SO and a 16-pin PDIP.
, LTC and LT are registered trademarks of Linear Technology Corporation.
* NiCd and NiMH batteries require charge termination circuitry (not shown in Figure 1).
APPLICATIONS
s
s
Chargers for NiCd, NiMH and Lithium Batteries
Step-Down Switching Regulator with Precision
Adjustable Current Limit
DESCRIPTION
With switching frequency as high as 500kHz, The LT
®
1510
current mode PWM battery charger is the smallest, sim-
TYPICAL APPLICATIONS
C1
0.22µF
D1
MBRM120T3
SW
V
CC
D3
MBRM120T3
C1
D1
0.22µF 1N5819
D3
1N5819
SW
V
CC
11V TO 28V
+
C
IN
*
10µF
1µF
BOOST
L1**
10µH
D2
MMBD914L
PROG
LT1510-5
GND
OVP
V
C
0.1µF
SENSE
BAT
+
C
OUT***
22µF
NOTE: COMPLETE LITHIUM-ION CHARGER, NO TERMINATION REQUIRED
* TOKIN OR MARCON CERAMIC SURFACE MOUNT
** COILTRONICS TP3-100, 10µH, 2.2mm HEIGHT (0.8A CHARGING CURRENT)
COILTRONICS TP1 SERIES, 10µH, 1.8mm HEIGHT (<0.5A CHARGING CURRENT)
*** PANASONIC EEFCD1B220
† OPTIONAL, SEE APPLICATIONS INFORMATION
Figure 1. 500kHz Smallest Li-Ion Cell Phone Charger (0.8A)
U
U
U
8.2V TO 20V
+
+
BOOST
PROG
C
IN
*
10µF
1µF
+
3.83k
300Ω
6.19k
L1**
33µH
D2
1N914
LT1510
GND
OVP
SENSE
BAT
V
C
0.1µF
300Ω
1k
1k
+
4.2V
Q3
2N7002
R3
70.6k
0.25%
R4
100k
0.25%
1510 F01
+
C
OUT
22µF
TANT
+
4.2V
+
4.2V
Q3
VN2222
R3
240k
0.25%
R4
100k
0.25%
1510 F02
NOTE: COMPLETE LITHIUM-ION CHARGER, NO TERMINATION REQUIRED
* TOKIN OR MARCON CERAMIC SURFACE MOUNT
** COILTRONICS CTX33-2
OPTIONAL, SEE APPLICATIONS INFORMATION
Figure 2. Charging Lithium Batteries (Efficiency at 1.3A > 87%)
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