MAX1576 Datasheet, PDF (2/22 Pages) Maxim Integrated Products – 480mA White LED 1x/1.5x/2x Charge Pump for Backlighting and Camera Flash

BLOCK DIAGRAM
12
DATA IN
11
CLOCK
ENABLE ¹⁰
BitGrabber
CONFIGURATION REGISTER
8 BITS
POR
OSCILLATOR AND 5
CONTROL LOGIC
5
BLANK
BANK SWITCHES (FETs)
9
13
15
16
17
BANK 1 BANK 2 BANK 3 BANK 4 BANK 5
D _{24–1/2–STAGE}
SHIFT REGISTER
C
4 44 ^{44 4}
BitGrabber
DISPLAY REGISTER
24 BITS
4 44 4 4 4
18
DATA OUT
PIN 3 = VDD
PIN 14 = VSS
NIBBLE MUX AND
DECODER ROM
7 a TO g h
DIM/BRIGHT
ANODE DRIVERS
(CURRENT SOURCES)
7 6 5 4 2 1 20 19
a b c de f g h
8 _Rx
MAXIMUM RATINGS* (Voltages Referenced to VSS)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _Symbol
Parameter
Value
Unit
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _VDD
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _Vin
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _Vout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _Iin
DC Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Current — per Pin
(Includes Pin 8)
– 0.5 to + 6.0
V
– 0.5 to VDD + 0.5 V
– 0.5 to VDD + 0.5 V
± 15
mA
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Iout DC Output Current —}
mA
Pins 1, 2, 4 – 7, 19, 20 Sourcing
– 40
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _Sinking
10
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Pins 9, 13, 15, 16, 17 Sinking}
320
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Pin 18}
± 15
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{IDD, ISS DC Supply Current, VDD and VSS Pins}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _TJ
Chip Junction Temperature
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ^RθJA
Device Thermal Resistance,
Junction–to–Ambient (see Thermal
Considerations section)
Plastic DIP
SOG Package
± 350
– 40 to + 130
90
100
mA
°C
°C/W
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Tstg Storage Temperature}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{TL Lead Temperature, 1 mm from Case for}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 10 Seconds
– 65 to + 150
°C
260
°C
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ * Maximum Ratings are those values beyond which damage to the device may occur.
This device contains protection circuitry to
guard against damage due to high static volt-
ages or electric fields. However, precautions
must be taken to avoid applications of any volt-
age higher than maximum rated voltages to this
high–impedance circuit. For proper operation,
Vin and Vout should be constrained to the range
VSS ≤ (Vin or Vout) ≤ VDD.
Unused inputs must always be tied to an ap-
propriate logic voltage level (e.g., either VSS or
VDD). Unused outputs must be left open.
Functional operation should be restricted to the limits in the Electrical Characteristics
tables or Pin Descriptions section.
MC14489B
2
MOTOROLA