MAX1577YETA+T Maxim Integrated Products, MAX1577YETA+T Datasheet - Page 3

• Manufacturer Part Number: MAX1577YETA+T
• Description: IC LED DRIVR BCKLGT FLASH 8-TDFN
• Manufacturer: Maxim Integrated Products
• Type: Backlight, Flash, Movier

Specifications of MAX1577YETA+T

• Topology: Linear (LDO), PWM, Switched Capacitor (Charge Pump)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight, Flash/Torch
• Type - Secondary: RGB, White LED
• Frequency: 800kHz ~ 1.25MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 3.4V, 4.6V, 5.1V
• Mounting Type: Surface Mount
• Package / Case: 8-TDFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 800mA
• Internal Switch(s): Yes
• Efficiency: 92%
• Function: Step Up, Step Down
• Output Voltage: 3.4 V, 4.6 V, 5.1 V
• Output Current: 1200 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V
otherwise noted. Typical values are at T
(V
Note 1: Limits are 100% production tested at T
EN_ Logic-High Voltage
EN_ Logic-Low Voltage
Logic Input Current
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
IN
IN
1200
1000
800
600
400
200
900
800
700
600
500
400
300
200
100
= 3.6V, circuit of Figure 2, EN1 = EN2 = IN, R
= 3.6V, circuit of Figure 2, R
0
0
2.7
2.7
LED CURRENT vs. SUPPLY VOLTAGE
LED CURRENT vs. SUPPLY VOLTAGE
R
R
1.2A White LED Regulating Charge Pump for
CS
PARAMETER
CS
3.1
3.1
= 0.27Ω
= 0.39Ω
3.5
3.5
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
770mA AT 3.66V
250mA AT 3.21V
_______________________________________________________________________________________
3.9
3.9
1100mA AT 3.78V
370mA AT 3.33V
4.3
150mA AT 3.06V
4.3
220mA AT 3.15V
F
4.7
F
4.7
CS
F
5.1
5.1
= 0.27Ω, Luxeon LXCL-PWF1 LED, T
F
V
V
V
V
T
F
F
IN
IN
IN
EN
J
Camera Flashes and Movie Lights
A
rising
5.5
5.5
= 4.2V to 5.5V
= 2.7V to 4.2V
= 2.7V to 5.5V
_ = 0V or 5.5V
= +25°C.) (Note 1)
A
100
100
= +25°C. Limits over the operating temperature range are guaranteed by design.
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
CS
2.7
2.7
220mA AT 3.15V
150mA AT 3.06V
= 60Ω, C
EFFICIENCY vs. SUPPLY VOLTAGE
EFFICIENCY vs. SUPPLY VOLTAGE
3.1
3.1
CONDITIONS
3.5
3.5
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
370mA AT 3.33V
IN
F
F
3.9
3.9
= 4.7µF, C1 = 2.2µF, C
770mA AT 3.66V
250mA AT 3.21V
T
T
4.3
4.3
A
A
Typical Operating Characteristics
= +25°C
= +85°C
A
1100mA AT 3.78V
F
= +25°C, unless otherwise noted.)
4.7
4.7
R
R
CS
CS
F
= 0.27Ω
= 0.39Ω
F
5.1
5.1
F
5.5
5.5
OUT
2500
2000
1500
1000
1800
1600
1400
1200
1000
500
800
600
400
200
0
= 10µF, T
0
BATTERY CURRENT vs. SUPPLY VOLTAGE
2.7
BATTERY CURRENT vs. SUPPLY VOLTAGE
2.7
MIN
1.6
1.4
R
R
CS
CS
370mA AT 3.33V
250mA AT 3.21V
3.1
3.1
= 0.27Ω
= 0.39Ω
770mA AT 3.66V
A
3.5
3.5
+160
TYP
0.02
0.02
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
= -40°C to +85°C, unless
20
1100mA AT 3.78V
3.9
F
3.9
F
150mA AT 3.06V
220mA AT 3.15V
F
4.3
4.3
MAX
0.4
1
F
4.7
4.7
F
5.1
F
UNITS
5.1
µA
°C
°C
V
V
5.5
5.5
3