LT1510-5CGN#PBF Linear Technology, LT1510-5CGN#PBF Datasheet

IC BATT CHARGER CONST V/I 16SSOP

LT1510-5CGN#PBF

Manufacturer Part Number
LT1510-5CGN#PBF
Description
IC BATT CHARGER CONST V/I 16SSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LT1510-5CGN#PBF

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
16-SSOP (0.150", 3.90mm Width)
Output Current
1.5A
Output Voltage
2 to 20V
Operating Supply Voltage (min)
7V
Operating Supply Voltage (max)
30V
Operating Temp Range
0C to 70C
Package Type
SSOP N
Mounting
Surface Mount
Pin Count
16
Operating Temperature Classification
Commercial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LT1510-5CGN#PBFLT1510-5CGN
Manufacturer:
LTNEAR
Quantity:
20 000
Company:
Part Number:
LT1510-5CGN#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LT1510-5CGN#PBFLT1510-5CGN#TR
Manufacturer:
LT
Quantity:
68
Company:
Part Number:
LT1510-5CGN#PBFLT1510-5CGN#TRPBF
Manufacturer:
MAXIM
Quantity:
12
Company:
Part Number:
LT1510-5CGN#PBFLT1510-5CGN#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
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 LT1510-5CGN#PBF

LT1510-5CGN#PBF Summary of contents

Page 1

... 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. ...

Page 2

... BAT 2 U RATINGS Operating Ambient Temperature Range Commercial ............................................. Extended Commercial (Note 7) ........... – ................... 30V CC Industrial (Note 8) .............................. – Operating Junction Temperature Range LT1510C (Note 7) ............................. – 125 C LT1510I ............................................ – 125 C Lead Temperature (Soldering, 10 sec).................. 300 ORDER PART TOP VIEW NUMBER 16 GND** LT1510CGN V 15 ...

Page 3

... PROG VA Supplying I and Switch OFF PROG 8V V 28V 28V 125 28V, T < LT1510 LT1510-5 All Conditions Temperature, LT1510 CC LT1510, T < LT1510-5 LT1510-5, T < LT1510 LT1510 (Note 8) A LT1510-5 (Note 9) LT1510/LT1510-5 MIN TYP MAX UNITS 6 0.3 0.5 2 mA/A 2 100 A 4 ...

Page 4

... Thermally Limited Maximum Charging Current, 16-Pin GN 1.5 1.3 4V BATTERY 1.1 8V BATTERY 0.9 12V BATTERY 0 C AMAX T = 125 C 16V BATTERY JMAX 0 INPUT VOLTAGE (V) 1510 G13 UNITS mho mho BAT LT1510 • TPC14 ...

Page 5

... V (V) C 1510 G10 LT1510/LT1510-5 Switching Frequency vs Temperature 210 205 200 195 190 185 180 100 – 120 140 TEMPERATURE ( C) 1510 G05 (Voltage Amplifier) ...

Page 6

... BOOST CC BAT is 55V. age reaches the preset value not used, the OVP pin BOOST should be grounded BOOST Maximum Duty Cycle 125 150 (V) BOOST 1510 G14 stays close to 2.465V shorted to GND 22 LT1510 • TPC15 C ...

Page 7

... R3 – CA2 + V REF PROG R C PROG I PROG Test Circuit 1 LT1510 – CA1 CA2 1k + 60k V REF PROG 0. 3.3k PROG + LT1006 LT1010 – 1k 20k LT1510/LT1510 BOOST SENSE I PROG I CA1 R BAT S1 – BAT I PROG = 500 A/A I BAT + 0VP VA V REF – 2.465V g = 0.64 m CHARGING CURRENT I ...

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 CA1 converts the charging current through much lower current ...

Page 9

... OUT raised to 4 with a bead of inductor, only 5% of the current ripple will flow in the battery. Soft Start The LT1510 is soft started by the 0.1 F capacitor on V pin. On start-up, V pin voltage will rise quickly to 0.5V, C then ramp at a rate set by the internal 45 A pull-up current and the external capacitor ...

Page 10

... PROG 240 Lithium-ion batteries typically require float voltage accu- racy 2%. Accuracy of the LT1510 OVP voltage is 0. and 1% over full temperature. This leads to the possibility that very accurate (0.1%) resistors might be needed for R3 and R4. Actually, the temperature of the LT1510 will rarely exceed float mode because charging currents have tapered off to a low level ...

Page 11

... D2 generates hysteresis in the trip level to avoid multiple comparator transitions. Nickel-Cadmium and Nickel-Metal-Hydride Charging The circuit in Figure 6 uses the 8-pin LT1510 to charge NiCd or NiMH batteries up to 12V with charging currents pin will be pulled of 0.5A when and 50mA when Q1 is off. ...

Page 12

... Thermal Calculations If the LT1510 is used for charging currents above 0.4A, a thermal calculation should be done to ensure that junction temperature will not exceed 125 C. Power dissipation in the IC is caused by bias and driver current, switch resis- tance, switch transition losses and the current sense resistor ...

Page 13

... Total power in the IC is: 0.17 + 0.13 + 0.32+ 0.26 = 0.88W Temperature rise will be (0.88W)(50 C/ This assumes that the LT1510 is properly heat sunk by con- necting the four fused ground pins to the expanded traces and that the PC board has a backside or internal plane for heat spreading ...

Page 14

... As it turns out, duty cycle can be extended to 93% by restricting boost voltage to 5V instead of using V is normally done. This lower boost voltage V 8) also reduces power dissipation in the LT1510 win-win decision. Even Lower Dropout For even lower dropout and/or reducing heat on the board, the input diode D3 (Figures 2 and 6) should be replaced with a FET ...

Page 15

... DWG # 05-08-1610) 0.053 – 0.069 (1.346 – 1.752) 0.004 – 0.010 (0.101 – 0.254) 0 – 8 TYP 0.014 – 0.019 0.050 (0.355 – 0.483) (1.270) BSC LT1510/LT1510 1510 F11 0.189 – 0.196* (4.801 – 4.978 0.229 – 0.244 0.150 – 0.157** (5.817 – ...

Page 16

... Step-Up Switching Regulator LT1376 500kHz Step-Down Switching Regulator LT1511 3A Constant-Voltage/Constant-Current Battery Charger LT1512 SEPIC Battery Charger Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977 www.linear-tech.com LT1510 SW V CC2 + 100 F V CC1 BOOST PROG 1k ...

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