LTC1046CS8 Linear Technology, LTC1046CS8 Datasheet

IC CMOS VOLT CONV SW-CAP 8-SOIC

LTC1046CS8

Manufacturer Part Number
LTC1046CS8
Description
IC CMOS VOLT CONV SW-CAP 8-SOIC
Manufacturer
Linear Technology
Type
Switched Capacitor (Charge Pump), Divider, Invertingr
Datasheet

Specifications of LTC1046CS8

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Current - Output
50mA
Frequency - Switching
5.5kHz ~ 30kHz
Voltage - Input
1.5 ~ 6 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Output Voltage
-1.5 to -6/0.75 to 3V
Output Current
50mA
Operating Supply Voltage (min)
1.5V
Operating Supply Voltage (max)
6V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Package Type
SOIC N
Pin Count
8
Mounting
Surface Mount
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Voltage - Output
-
Power - Output
-
Lead Free Status / Rohs Status
Not Compliant

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Manufacturer
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Price
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FEATURES
TYPICAL APPLICATIO
APPLICATIO S
50mA Output Current
Plug-In Compatible with ICL7660/LTC1044
R
300 A Maximum No Load Supply Current at 5V
Boost Pin (Pin 1) for Higher Switching Frequency
97% Minimum Open-Circuit Voltage Conversion
Efficiency
95% Minimum Power Conversion Efficiency
Wide Operating Supply Voltage Range: 1.5V to 6V
Easy to Use
Low Cost
Conversion of 5V to 5V Supplies
Precise Voltage Division, V
Supply Splitter, V
OUT
= 35 Maximum
10 F
+
Generating – 5V from 5V
U
OUT
1
2
3
4
BOOST
CAP
GND
CAP
= V
LTC1046
+
V
S
OUT
OSC
OUT
/2
V
LV
+
U
= V
8
7
6
5
IN
/2
+
1046 TA01
10 F
5V INPUT
–5V OUTPUT
DESCRIPTIO
The LTC
capacitor voltage converter. It plugs in for the ICL7660/
LTC1044 in 5V applications where more output current is
needed. The device is optimized to provide high current
capability for input voltages of 6V or less. It trades off
operating voltage to get higher output current. The
LTC1046 provides several voltage conversion functions:
the input voltage can be inverted (V
(V
Designed to be pin-for-pin and functionally compatible
with the ICL7660 and LTC1044, the LTC1046 provides 2.5
times the output drive capability.
OUT
, LTC and LT are registered trademarks of Linear Technology Corporation.
= V
®
IN/
Output Voltage vs Load Current for V
1046 is a 50mA monolithic CMOS switched
–5
–4
–3
–2
–1
0
2) or multiplied (V
5V to – 5V Converter
0
ICL7660/LTC1044,
R
10
U
OUT
LOAD CURRENT, I
= 55
R
OUT
LTC1046,
20
= 27
“Inductorless”
30
OUT
L
(mA)
= nV
OUT
T
40
A
= 25 C
1046 TA02
= – V
IN
+
50
LTC1046
= 5V
).
IN
), divided
1046fb
1

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LTC1046CS8 Summary of contents

Page 1

... V OUT IN/ Designed to be pin-for-pin and functionally compatible with the ICL7660 and LTC1044, the LTC1046 provides 2.5 times the output drive capability. , LTC and LT are registered trademarks of Linear Technology Corporation Output Voltage vs Load Current for V –5 –4 5V INPUT –3 – ...

Page 2

... A OSC MIN 1.5 = 50mA (Note 10mA ORDER PART NUMBER TOP VIEW + 8 V LTC1046CN8 7 OSC LTC1046CS8 6 LV LTC1046IN8 V 5 OUT LTC1046IS8 S8 PACKAGE 8-LEAD PLASTIC SO S8 PART MARKING = 110 C, = 130 C (N8 150 C, = 150 C (S8) 1046 JA 1046I LTC1046C LTC1046I/M TYP MAX MIN TYP ...

Page 3

ELECTRICAL C HARA TERISTICS C Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note 2: Connecting any input terminal to voltages greater than V less than ground may cause destructive ...

Page 4

LTC1046 W U TYPICAL PERFOR A Output Voltage vs Load Current + for 2 2 8kHz OSC 1 1.0 0.5 ...

Page 5

PPLICATI FOR ATIO Theory of Operation To understand the theory of operation of the LTC1046, a review of a basic switched capacitor building block is helpful. In Figure 2, when the switch is in ...

Page 6

LTC1046 PPLICATI S I FOR ATIO LV (Pin 6) The internal logic of the LTC1046 runs between V + (Pin 6). For V greater than or equal to 3V, an internal switch shorts LV to GND ...

Page 7

O U TYPICAL A PPLICATI Negative Voltage Converter Figure 7 shows a typical connection which will provide a negative supply from an available positive supply. This circuit operates over full temperature and power supply ranges without the need of any ...

Page 8

LTC1046 O U TYPICAL A PPLICATI Battery Splitter A common need in many systems is to obtain positive and negative supplies from a single battery or single power supply system. Where current requirements are small, the circuit shown in Figure ...

Page 9

PACKAGE DESCRIPTIO CORNER LEADS OPTION .045 – .068 (1.143 – 1.650) FULL LEAD OPTION .300 BSC (7.62 BSC) .008 – .018 (0.203 – 0.457) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS U J8 Package 8-Lead CERDIP ...

Page 10

LTC1046 PACKAGE DESCRIPTIO .300 – .325 (7.620 – 8.255) .008 – .015 (0.203 – 0.381) +.035 .325 –.015 +0.889 8.255 –0.381 NOTE: 1. DIMENSIONS ARE MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL ...

Page 11

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 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 12

... Low Output Noise, SOT-23 Package 5V to – Supply Current, SOT-23 Package 5V/50mA Supply Current, 2.7V to 5.5V Input Range www.linear.com , 1.5V to 12V Input Range OUT , SO-8 Package OUT 1046fb LT/TP 0403 1K REV B • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1991 ...

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