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LT1769IGN Datasheet(PDF) 2 Page - Linear Technology

No. de pieza LT1769IGN
Descripción Electrónicos  Constant-Current/ Constant-Voltage 2A Battery Charger with Input Current Limiting
PDF  16 Pages
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Fabricante Electrónico  LINER [Linear Technology]
Página de inicio  http://www.linear.com
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LT1769IGN Datasheet(HTML) 2 Page - Linear Technology

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LT1769
ABSOLUTE MAXIMUM RATINGS
PACKAGE/ORDER INFORMATION
ORDER PART
NUMBER
Consult factory for Military grade parts.
*ALL VCC PINS SHOULD
BE CONNECTED
TOGETHER CLOSE TO
THE PINS
** ALL GND PINS ARE
FUSED TO INTERNAL DIE
ATTACH PADDLE FOR
HEAT SINKING. CONNECT
THESE PINS TO
EXPANDED PC LANDS
FOR PROPER HEAT
SINKING. 35
°C/W
THERMAL RESISTANCE
ASSUMES AN INTERNAL
GROUND PLANE
DOUBLING AS A HEAT
SPREADER
LT1769CGN
LT1769IGN
TJMAX = 125°C, θJA = 35°C/ W**
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
GN PACKAGE
28-LEAD PLASTIC SSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
GND**
GND**
GND**
SW
BOOST
UV
GND**
GND**
OVP
CLP
CLN
COMP1
SENSE
GND**
GND**
GND**
GND**
VCC1*
VCC2*
VCC3*
GND**
PROG
VC
UVOUT
COMP2
BAT
SPIN
GND**
ELECTRICAL CHARACTERISTICS
(Note 1)
Supply Voltage
(VCC, CLP and CLN Pin Voltage) ......................... 30V
BOOST Pin Voltage with Respect to VCC ................. 25V
IBAT (Average)........................................................... 2A
Operating Junction Temperature Range
Commercial ........................................... 0
°C to 125°C
Industrial ......................................... – 40
°C to 125°C
Operating Ambient Temperature
Commercial ............................................ 0
°C to 70°C
Industrial ........................................... – 40
°C to 85°C
Storage Temperature Range ................. – 65
°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 16V, VBAT = 8V, RS2 = RS3 = 200Ω (see Block Diagram),
VCLN = VCC. No load on any outputs unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Overall
Supply Current
VPROG = 2.7V, VCC ≤ 20V
q
4.5
6.8
mA
VPROG = 2.7V, 20V < VCC ≤ 25V
q
4.6
7.0
mA
Sense Amplifier CA1 Gain and Input Offset Voltage
8V
≤ VCC ≤ 25V , 0V ≤ VBAT ≤ 20V
(With RS2 = 200Ω, RS3 = 200Ω)RPROG = 4.93k
q
93
100
107
mV
(Measured across RS1)(Note 2)
RPROG = 49.3k
q
810
12
mV
TA < 0°C7
12
mV
VCC = 28V, VBAT = 20V
RPROG = 4.93k
q
90
110
mV
RPROG = 49.3k
q
614
mV
TA < 0°C7
13
mV
VCC Undervoltage Lockout (Switch OFF) Threshold
Measured at UV Pin
q
678
V
UV Pin Input Current
0.2V
≤ VUV ≤ 8V
q
0.1
5
µA
UV Output Voltage at UVOUT Pin
In Undervoltage State, IUVOUT = 70µA
q
0.1
0.5
V
UV Output Leakage Current at UVOUT Pin
8V
≤ VUV, VUVOUT = 5V
q
0.1
3
µA
Reverse Current from Battery (When VCC Is
VBAT ≤ 20V, VUV ≤ 0.4V
3
15
µA
Not Connected, VSW Is Floating)



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