MAX1561ETA ,High-Efficiency / 26V Step-Up Converters for Two to Six White LEDsApplicationsTOPPART TEMP RANGE PIN-PACKAGECell Phones and Smart PhonesMARKPDAs, Palmtops, and Wirel ..
MAX1561ETA+ ,High-Efficiency, 26V Step-Up Converters for Two to Six White LEDsMAX1561/MAX159919-2731; Rev 1; 10/03High-Efficiency, 26V Step-Up Convertersfor Tw o to Six White LE ..
MAX1561ETA+T ,High-Efficiency, 26V Step-Up Converters for Two to Six White LEDsFeaturesThe MAX1561/MAX1599 step-up converters drive up to ♦ Accurate Current Regulation for Unifor ..
MAX1561ETA-T ,High-Efficiency, 26V Step-Up Converters for Two to Six White LEDsApplicationsTOPPART TEMP RANGE PIN-PACKAGECell Phones and Smart PhonesMARKPDAs, Palmtops, and Wirel ..
MAX1561ETA-T ,High-Efficiency, 26V Step-Up Converters for Two to Six White LEDsApplicationsTOPPART TEMP RANGE PIN-PACKAGECell Phones and Smart PhonesMARKPDAs, Palmtops, and Wirel ..
MAX1562ESA ,Programmable 4A USB Current-Limited Switches with Autoreset and Fault BlankingELECTRICAL CHARACTERISTICS(V = +5V, C = 1µF, C = 4.7µF, T = 0°C to +85°C, unless otherwise noted. T ..
MAX4221CSE ,330MHz Buffered Video Switches/ Crosspoint Building BlocksFeaturesThe MAX4111/MAX4121/MAX4221 wideband video' -3dB Bandwidth of 330MHzswitches are optimized ..
MAX4221CSE ,330MHz Buffered Video Switches/ Crosspoint Building BlocksMAX4111/MAX4121/MAX422119-0402; Rev 0; 6/95330MHz Buffered Video Switches/Crosspoint Building Block ..
MAX4221CSE+ ,330MHz Buffered Video Switches Crosspoint Building BlocksApplicationsMAX4221CSE 0°C to +70°C 16 Narrow SOVideo-Router and Crosspoint ArraysBroadcast/HDTV-Qu ..
MAX4222ESD ,High-Speed / Single-Supply / Gain of @ / Closed-Loop / Rail-to-Rail Buffers with EnableELECTRICAL CHARACTERISTICS(V = +5V, V = 0V, IN_- = 0V, EN_ = 5V, R = ∞ to 0V, V = V /2, noninvertin ..
MAX4223ESA ,1GHz / Low-Power / SOT23 / Current-Feedback Amplifiers with ShutdownELECTRICAL CHARACTERISTICS(V = +5V, V = -5V, SHDN = 5V, V = 0V, R = ¥ , T = T to T , unless otherwi ..
MAX4223ESA ,1GHz / Low-Power / SOT23 / Current-Feedback Amplifiers with ShutdownELECTRICAL CHARACTERISTICS (continued)(V = +5V, V = -5V, SHDN = 5V, V = 0V, R = ¥ , T = T to T , un ..
MAX1561ETA-MAX1599ETA
High-Efficiency / 26V Step-Up Converters for Two to Six White LEDs
General DescriptionThe MAX1561/MAX1599 step-up converters drive up to
six white LEDs with a constant current to provide back-
light in cell phones, PDAs, and other hand-held
devices. The step-up converter topology allows series
connection of the white LEDs so the LED currents are
identical for uniform brightness. This configuration elim-
inates the need for ballast resistors and expensive fac-
tory calibration.
The MAX1561/MAX1599 include an internal, high-volt-
age, low-RDS(ON)N-channel MOSFET switch for high
efficiency and maximum battery life. A single Dual
Mode™ input provides a simple means of brightness
adjustment and on/off control. Fast 1MHz (500kHz for
the MAX1599) current-mode, pulse-width modulated
(PWM) operation allows for small input and output
capacitors and a small inductor while minimizing ripple
on the input supply/battery. Programmable soft-start
eliminates inrush current during startup.
Both devices are available in a space-saving, 8-pin 3mm
x 3mm thin DFN package with exposed paddle (EP).
ApplicationsCell Phones and Smart Phones
PDAs, Palmtops, and Wireless Handhelds
e-Books and Subnotebooks
White LED Display Backlighting
FeaturesAccurate Current Regulation for Uniform
IlluminationHigh Efficiency Up to 87%Flexible Analog or PWM Dimming ControlUp to 900mW Output Power with Internal 30V
MOSFET SwitchFast 1MHz (MAX1561) or 500kHz (MAX1599) PWM
OperationSmall, Low-Profile External Components2.6V to 5.5V Input Range26V (max) Output with Overvoltage ProtectionOptimized for Low 15mVP-PInput RippleSoft-Start with Zero Inrush Current0.3µA Shutdown CurrentTiny 8-Pin 3mm x 3mm Thin DFN Package
MAX1561/MAX1599
High-Efficiency, 26V Step-Up Converters
for Two to Six White LEDs
Pin Configuration
Typical Operating CircuitDual Mode is a trademark of Maxim Integrated Products, Inc.
*EP = Exposed paddle.
MAX1561/MAX1599
High-Efficiency, 26V Step-Up Converters
for Two to Six White LEDs
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VIN= 3V, VOUT = 20V, COUT = 0.1µF, CCOMP = 0.15µF, RSENSE = 7.5Ω, VCTRL = 1.5V, Figure 1, TA = 0°C to +85°C,unless other-
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.
IN to GND.................................................................-0.3V to +6V
PGND to GND.......................................................-0.3V to +0.3V
LX, OUT to GND.....................................................-0.3V to +30V
CTRL to GND...................-0.3V to the lower of +6V or (VIN+ 2V)
COMP, CS to GND.........................................-0.3 to (VIN+ 0.3V)
ILX.............................................................................................1A
Continuous Power Dissipation (TA = +70°C)
3mm x 3mm 8-Pin TDFN
(derate 24.4mW/°C above +70°C).............................1950mW
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
MAX1561/MAX1599
High-Efficiency, 26V Step-Up Converters
for Two to Six White LEDs
ELECTRICAL CHARACTERISTICS (continued)(VIN= 3V, VOUT = 20V, COUT = 0.1µF, CCOMP = 0.15µF, RSENSE = 7.5Ω, VCTRL = 1.5V, Figure 1, TA = 0°C to +85°C,unless other-
wise noted. Typical values are at TA= +25°C.)
Note 2:Time from CTRL going below the dual-mode threshold to IC shutdown.
Note 3:Specifications to -40°C are guaranteed by design and not production tested.
ELECTRICAL CHARACTERISTICS(VIN= 3V, VOUT = 20V, COUT = 0.1µF, CCOMP = 0.15µF, RSENSE = 7.5Ω, VCTRL = 1.5V, Figure 1, TA = -40°C to +85°C,unless other-
wise noted.) (Note 3)
MAX1561/MAX1599
High-Efficiency, 26V Step-Up Converters
for Two to Six White LEDs
Typical Operating Characteristics(Circuit of Figure 1, VIN= 3.6V, ILED= 15mA, L1 = 22µH, CIN= 2.2µF, COUT= 0.1µF, CCOMP= 0.1µF, RSENSE= 7.5Ω, 4 LEDs, = +25°C, unless otherwise noted.)
MAX1561/MAX1599
High-Efficiency, 26V Step-Up Converters
for Two to Six White LEDs
Typical Operating Characteristics (continued)(Circuit of Figure 1, VIN= 3.6V, ILED= 15mA, L1 = 22µH, CIN= 2.2µF, COUT= 0.1µF, CCOMP= 0.1µF, RSENSE= 7.5Ω, 4 LEDs, = +25°C, unless otherwise noted.)
MAX1561/MAX1599
High-Efficiency, 26V Step-Up Converters
for Two to Six White LEDs
Pin Description
