MAX1570 Maxim Integrated Products, MAX1570 Datasheet - Page 3

• Manufacturer Part Number: MAX1570
• Description: White LED Current Regulator
• Manufacturer: Maxim Integrated Products

ELECTRICAL CHARACTERISTICS (continued)
(V
Typical values are at T
ELECTRICAL CHARACTERISTICS
(V
(Note 3)
Note 1: Dropout voltage is defined as the LED_ to GND voltage at which current sink into LED_ drops 20% from the value at LED_ = 1V.
Note 2: Dropout voltage is defined as the LED_ to GND voltage at which current sink into LED_ drops 10% from the value at LED_ = 1V.
Note 3: Specifications to -40°C are guaranteed by design and not production tested.
Dual Mode is a trademark of Maxim Integrated Products, Inc.
IN Operating Voltage
Undervoltage Lockout Threshold
Supply Current
Shutdown Supply Current
SET Bias Voltage
SET Leakage in Shutdown
SET Current Range
SET to LED_ Current Ratio
LED_ to LED_ Current Matching
Maximum LED_ Sink Current
LED_ Dropout Voltage
LED1 Regulation Voltage
(1.5x Mode)
LED Leakage in Shutdown
Maximum OUT Current
Open-Loop OUT Resistance
EN1, EN2 High Voltage
EN1, EN2 Low Voltage
EN1, EN2 Input Current
LED1 Dual Mode Threshold
LED1 Dual Mode™ Threshold
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
IN
IN
= 3.6V, GND = PGND = 0, EN1 = EN2 = IN, C
= 3.6V, GND = PGND = 0, EN1 = EN2 = IN, C
PARAMETER
PARAMETER
White LED Current Regulator with 1x/1.5x
_______________________________________________________________________________________
A
= +25°C.)
V
1MHz switching, no load
EN1 = EN2 = GND
EN1 = GND, EN2 = IN, I
EN1 = IN, EN2 = GND, I
EN1 = IN, EN2 = IN, I
EN1 = EN2 = GND, V
I
I
I
I
I
I
EN1 = GND, EN2 = IN, I
EN1 = IN, EN2 = GND, I
EN1 = IN, EN2 = IN, I
EN1 = GND, EN2 = GND, V
IN ≥ 3.4V, OUT ≥ 3.9V
1x mode (V
1.5x mode (1.5V
IN = 2.7V to 5.5V
IN = 2.7V to 5.5V
EN_ = GND or 5.5V
LED
SET
SET
SET
SET
SET
IN
rising or falling
/I
= 67µA, V
= 33µA (Note 1)
= 67µA (Note 2)
= 100µA (Note 2)
= 130µA, V
SET
, I
SET
IN
- V
IN
LED_
= 67µA, V
IN
High-Efficiency Charge Pump
LED_
IN
OUT
= C1 = C2 = 1µF, C
= C1 = C2 = 1µF, C
- V
= 1V
= 1V
)/I
SET
IN
SET
OUT
CONDITIONS
CONDITIONS
OUT
= 5.5V, V
SET
SET
SET
SET
LED_
= 100µA
= 100µA
)/I
OUT
LED_
= 33µA
= 67µA
= 33µA
= 67µA
= 1V
= 5.5V
SET
OUT
= 0 or 5.5V
OUT
= 4.7µF, T
= 4.7µF, T
A
= -40°C to +85°C, unless otherwise noted.)
A
= 0°C to +85°C, unless otherwise noted.
0.190
0.380
0.570
2.25
MIN
MIN
215
185
277
360
150
2.7
1.6
20
28
50
50
-3
TYP
160
75
20
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0.210
0.420
0.630
MAX
MAX
2.60
1.75
100
130
250
180
360
410
215
323
440
100
5.5
3.5
0.4
+3
5
1
1
8
1
UNITS
UNITS
A/A
mA
mA
mV
mV
mA
mV
mV
µA
µA
µA
µA
µA
°C
°C
%
Ω
V
V
V
V
V
3