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Maxim > Solutions > Instrumentation Cluster

TFT Bias

Challenges: Active-matrix thin-film transistor (TFT) liquid-crystal displays require a set of specific supply voltages and proper power sequencing including VCOM buffer and gamma correction.

DATA SHEETS
Display Title/Parts Key Advantages
QV  PDF Quintuple/Triple-Output TFT LCD Power Supplies with Fault Protection and VCOM Buffer
MAX1997, MAX1998

Quintuple-/Triple-Output TFT LCD Power Supplies with Fault Protection and VCOM Buffer
QV  PDF Quad-Output TFT LCD DC-DC Converters with Buffer
MAX1778, MAX1880, MAX1881, MAX1882, MAX1883, MAX1884, MAX1885



Key Specifications:  Multifunction PMICs
Part Number Primary Topology Monitor/Control Features DC-DC/Power Features LCD/LED/Flash/CCD Features VIN
(V)		 VIN
(V)		 VOUT
(V)		 VOUT
(V)		 Max. IOUT
(A)		 Max. IOUT
(A)		 Oper. Freq.
(kHz)		 Package/Pins Smallest Available Pckg.
(mm2)
min max min max ≥ ≤ max w/pins
MAX1997  Step-Up
Output UVP
Reset Output
Shutdown
Adj. Frequency
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
 2.7 5.5 2.7 13 0.3 0.3 1500
TQFN/32
 26
MAX1998 
Output UVP
Reset Output
Shutdown
Adj. Frequency
Current Limit
Internal Pwr. FETs
Soft Start
 TFT Bias 0.3 0.3 1500
TQFN/20
 26
MAX1778  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
 0.75 0.75 1000
TSSOP/24
 52
MAX1880  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
 0.75 0.75 1000
TSSOP/24
 52
MAX1881  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
 0.75 0.75 500
TSSOP/24
 52
MAX1882  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
 0.75 0.75 500
TSSOP/24
 52
MAX1883  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
 0.75 0.75 1000
TSSOP/20
 45
MAX1884  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
 0.75 0.75 500
TSSOP/20
 45
MAX1885  Shutdown
Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
TFT Bias
VCOM Buffer
 0.75 0.75 500
TSSOP/20
 45
See All Multifunction PMICs (83)



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