CAT1023 CATALYST [Catalyst Semiconductor], CAT1023 Datasheet - Page 6

• Manufacturer Part Number: CAT1023
• Description: Catalyst Semiconductor
• Manufacturer: CATALYST [Catalyst Semiconductor]

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CAT3604
4-Channel Fractional Charge Pump LED Driver
4-Channel Fractional Charge Pump LED Driver
Features
Package Information
w h i t e l e d d r i v e r s
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Features
Features
automatically switches from 1x LDO mode to
1.5x boost mode
inductor-less design minimizes EMI interference
drives up to 4 Parallel LEDs at 30mA per channel
very low input ripple and noise
“zero”shutdown current extends battery life
power efficiency up to 93%
optimized for use with Lithium-Ion battery
systems
16 pad TQFN (4x4mm,height 0.8mm max)
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CAT3606
6-Channel Fractional Charge Pump LED Driver
6-Channel Fractional Charge Pump LED Driver
independent dimming and standby control
for Main and Sub displays
automatically switches from 1x LDO mode to
1.5x boost mode
inductor-less design minimizes EMI
interference
Battery
3≤VIN≤4.2V
RSET
+
-
RSET
ENM
VIN
ENS
C IN
EN
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LED Output
Selection
Reference
Current
Setting
1.2V
3V to 4.2V
Featured Products
Featured Products
C1-
Oscillator
Battery
V IN
1MHz
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1.5x Charge Pump
drives up to 6 Parallel LEDs at 30mA per
channel
very low input ripple and noise
“zero”shutdown current extends battery life
power efficiency up to 90%
1x mode (LDO)
+
-
C1+
C2-
C IN
Main
Control 0
Control 1
Control 2
RSET
Mode Control
C2+
EN
GND
CAT3606
V IN
EN
CTR0
CTR1
CTR2
RSET
C1+
Sub
CAT3604
C1-
GND
C2+
Package Information
LED1
LED2
LED3
LED4
LED5
LED6
6 Current
Sink Regulators
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V OUT
short circuit detect/disable on all channels
optimized for use with Lithium-Ion battery systems
16-pad TQFN (4x4mm,height 0.8mm max)
LED1
LED2
LED3
LED4
VOUT
C2-
20mA
C OUT
20mA
C OUT
TM