MAX1577YETA+T Maxim Integrated Products, MAX1577YETA+T Datasheet - Page 2

• 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

ABSOLUTE MAXIMUM RATINGS
IN, OUT, EN1, EN2 to GND ...................................-0.3V to +6.0V
OUT to GND During Shutdown....................-0.3V to (V
OUT to CS .............................................................-0.6V to +0.6V
CS to GND................................................-0.3V to (V
CN to GND...................................................-0.3V to (V
CP to GND .....-0.3V to the Greater of (V
OUT Short Circuit to GND ..........................................Continuous
1.2A White LED Regulating Charge Pump for
Camera Flashes and Movie Lights
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
otherwise noted. Typical values are at T
2
IN Operating Voltage
Undervoltage-Lockout Threshold
Undervoltage-Lockout Hysteresis
Supply Current
Shutdown Supply Current
Soft-Start Time
OUT Overvoltage Protection
OUT Voltage Regulation Mode
CS Voltage-Mode Threshold
(V
CS Regulation Voltage
(V
CS Threshold Accuracy
Maximum OUT Current
Open-Loop OUT Resistance
OUT Internal Pulldown in
Shutdown
Switching Frequency
IN
OUT
OUT
_______________________________________________________________________________________
= 3.6V, circuit of Figure 2, EN1 = EN2 = IN, R
- V
- V
CS
CS
PARAMETER
)
)
V
1MHz switching, no load
1x LDO mode, no switching
EN1 = EN2 = GND
MAX1577Z, T
I
MAX1577Y, T
I
EN1 = GND, EN2 = IN
EN1 = IN, EN2 = GND
EN1 = EN2 = IN
T
V
V
1x LDO mode
2x mode, V
EN1 = EN2 = GND
OUT
OUT
IN
A
IN
LED
= +25°C
A
OUT
rising
= 2.7V to 5.5V, T A = -40°C to +85°C
= +25°C.) (Note 1)
= 100mA
= 100mA
= 4.1V, EN1 = EN2 = IN
+ 1V) or (V
IN
A
A
= 3.4V
OUT
CS
= +25°C,
= +25°C,
IN
IN
= 60Ω, C
IN
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 1V)
CONDITIONS
IN
= 4.7µF, C1 = 2.2µF, C
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
T
T
EN1 or EN2 = IN
EN1 = GND, EN2 = IN
EN1 = IN, EN2 = GND
EN1 = EN2 = IN
V
V
A
A
IN
IN
8-Pin TDFN (derate 18.2mW/°C above +70°C) ..........1455mW
= +25°C
= +85°C
= 3.1V
= 3.4V
OUT
= 10µF, T
MIN
4.95
3.17
4.40
4.95
0.80
600
800
2.7
2.3
-2
-3
A
= +70°C)
A
0.225
1200
±0.5
TYP
2.45
0.01
5.10
3.40
4.60
5.10
100
300
900
0.2
0.5
5.3
0.6
1.0
= -40°C to +85°C, unless
35
24
60
5
2
5
MAX
5.25
3.60
4.80
5.25
1.25
5.5
2.6
0.3
+2
+3
1
3
UNITS
MHz
mV
mA
mV
mV
mA
ms
µA
kΩ
%
Ω
V
V
V
V