LT1510CS8 Linear Technology, LT1510CS8 Datasheet

IC BATT CHARGER CONST V/I 8SOIC

LT1510CS8

Manufacturer Part Number
LT1510CS8
Description
IC BATT CHARGER CONST V/I 8SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LT1510CS8

Function
Charge Management
Battery Type
Li-Ion, NiCd, NiMH
Voltage - Supply
6.2 V ~ 28 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
LT1510CS8
Manufacturer:
LT
Quantity:
10 000
Price:
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
LT1510CS8#30390
Manufacturer:
LT
Quantity:
10 000
Price:
DESCRIPTION
FEATURES
With switching frequency as high as 500kHz, The LT
current mode PWM battery charger is the smallest, sim-
TYPICAL APPLICATIONS
APPLICATIONS
***
NOTE: COMPLETE LITHIUM-ION CHARGER, NO TERMINATION REQUIRED
**
*
Figure 1. 500kHz Smallest Li-Ion Cell Phone Charger (0.8A)
TOKIN OR MARCON CERAMIC SURFACE MOUNT
COILTRONICS TP3-100, 10 H, 2.2mm HEIGHT (0.8A CHARGING CURRENT)
COILTRONICS TP1 SERIES, 10 H, 1.8mm HEIGHT (<0.5A CHARGING CURRENT)
PANASONIC EEFCD1B220
OPTIONAL, SEE APPLICATIONS INFORMATION
Charges NiCd, NiMH and Lithium-Ion Batteries ––
Only One
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: 3 A
Charging Current Soft Start
Shutdown Control
500kHz Version Uses Small Inductor
Chargers for NiCd, NiMH and Lithium Batteries
Step-Down Switching Regulator with Precision
Adjustable Current Limit
L1**
10 H
0.22 F
C1
D2
MMBD914L
MBRM120T3
1
D1
/
10
W Resistor Is Needed to Program
OVP
SW
BOOST
GND
SENSE
U
U
LT1510-5
PROG
BAT
V
V
CC
C
+
+
0.1 F
1 F
C
22 F
C
10 F
OUT ***
IN
U
*
300
1k
MBRM120T3
+
D3
4.2V
Constant-Current Battery Charger
6.19k
R3
70.6k
0.25%
R4
100k
0.25%
Q3
2N7002
8.2V TO 20V
®
1510
1510 F01
+ –
* NiCd and NiMH batteries require charge termination circuitry (not shown in Figure 1).
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 0.1
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 3 A
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.
Figure 2. Charging Lithium Batteries (Efficiency at 1.3A > 87%)
, LTC and LT are registered trademarks of Linear Technology Corporation.
NOTE: COMPLETE LITHIUM-ION CHARGER, NO TERMINATION REQUIRED
** COILTRONICS CTX33-2
L1**
33 H
* TOKIN OR MARCON CERAMIC SURFACE MOUNT
OPTIONAL, SEE APPLICATIONS INFORMATION
0.22 F
C1
D2
1N914
1N5819
D1
Constant-Voltage/
OVP
SW
BOOST
GND
SENSE
LT1510
PROG
BAT
V
V
CC
C
+
+
LT1510/LT1510-5
0.1 F
1 F
C
10 F
C
22 F
TANT
IN
OUT
*
300
1k
1N5819
+
+
D3
4.2V
4.2V
onboard current
3.83k
R3
240k
0.25%
R4
100k
0.25%
Q3
VN2222
11V TO 28V
1510 F02
+ –
1

Related parts for LT1510CS8

LT1510CS8 Summary of contents

Page 1

... 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. ® 1510 , LTC and LT are registered trademarks of Linear Technology Corporation. * NiCd and NiMH batteries require charge termination circuitry (not shown in Figure 1 0.22 F MBRM120T3 8 ...

Page 2

... JMAX JA 8 **GND ORDER PART GN PACKAGE (0.015 IN) NUMBER 16-LEAD PLASTIC SSOP T JMAX LT1510CS8 ** FOUR CORNER PINS ARE FUSED TO LT1510IS8 INTERNAL DIE ATTACH PADDLE FOR HEAT SINKING. CONNECT THESE FOUR PINS TO EXPANDED PC LANDS FOR S8 PART MARKING PROPER HEAT SINKING. 1510 1510I Consult factory for Military grade parts. ...

Page 3

ELECTRICAL CHARACTERISTICS V = 16V 8V, V (maximum operating V CC BAT MAX PARAMETER Overall Minimum Input Operating Voltage Reverse Current from Battery (When V Is Not CC Connected Floating) SW Boost Pin Current Switch Switch ...

Page 4

LT1510/LT1510-5 ELECTRICAL CHARACTERISTICS V = 16V 8V, V (maximum operating V CC BAT MAX PARAMETER Current Amplifier (CA2) Transconductance Maximum V for Switch OFF C I Current (Out of Pin) VC Voltage Amplifier (VA), 16-Pin Only Transconductance (Note ...

Page 5

W U TYPICAL PERFORMANCE CHARACTERISTICS Efficiency of Figure 2 Circuit 100 V = 15V (EXCLUDING DISSIPATION INPUT DIODE D3 8.4V BAT 0.1 0.3 0.5 0.7 0.9 ...

Page 6

LT1510/LT1510 TYPICAL PERFORMANCE CHARACTERISTICS Switch Current vs Boost Current vs Boost Voltage 16V 38V 40 BOOST 28V 35 18V 0.2 0.4 0.6 0.8 ...

Page 7

W BLOCK DIAGRAM 0. – 1.5V GND PWM V BAT – 60k TEST CIRCUITS V C 0.047 0.65V 200kHz + OSCILLATOR SHUTDOWN – – SLOPE ...

Page 8

LT1510/LT1510-5 TEST CIRCUITS U OPERATIO The LT1510 is a current mode PWM step-down (buck) switcher. The battery DC charging current is programmed by a resistor R (or a DAC output current) at the PROG PROG pin (see Block Diagram). Amplifier ...

Page 9

U U APPLICATIONS INFORMATION capacity ceramic capacitor ( from Tokin or United Chemi-Con/MARCON, et al., and the old standby, aluminum electrolytic, which will require more microfarads to achieve adequate ripple rating. OS-CON can also be used. ...

Page 10

LT1510/LT1510 APPLICATIONS INFORMATION where R is the total resistance from PROG pin to PROG ground. For example, 1A charging current is needed. 2 465 V 2000 PROG 1 A Charging current can also be programmed ...

Page 11

U U APPLICATIONS INFORMATION of the battery, canceling part or all of the 200 A. Note that if net current is into the battery and the battery is removed, the charger output voltage will float high, to near input voltage. ...

Page 12

LT1510/LT1510 APPLICATIONS INFORMATION 0.18 INTERNAL SENSE RESISTOR LT1510 GND Figure 7. Current Comparator for Initiating Float Time-Out voltage decrease is detected as an indication of near full charge. The charging current is then reduced to a much ...

Page 13

U U APPLICATIONS INFORMATION Example 15V 8.4V BAT BIAS 012 ...

Page 14

LT1510/LT1510 APPLICATIONS INFORMATION 90 NOTE: PEAK DIE TEMPERATURE WILL BE ABOUT 10 C HIGHER THAN LEAD TEMPER- 80 ATURE AT 1.3A CHARGING CURRENT 70 2-LAYER BOARD 60 50 4-LAYER BOARD I = 1.3A 40 CHRG V = 16V ...

Page 15

... DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 16

... F POT 1 F 100k V OUT 2.5V TO 15V CURRENT LIMIT LEVEL 50mA TO 1A 1510 TA01 0.386 – 0.394* (9.804 – 10.008 0.150 – 0.157** (3.810 – 3.988 1510fc LT/GP 1197 REV C 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1995 S16 0695 ...

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