MAX8753 Datasheet, PDF (5/20 Pages) Maxim Integrated Products – TFT LCD DC-DC Converter with Integrated Charge Pumps

TFT LCD DC-DC Converter with
Integrated Charge Pumps
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V_IN = 3.0V, SHDN = LCDON = IN, V_SUPP = V_SUPN = 10V, PGND = GND, C_REF = 0.22µF, C_INTG = 470pF, T_A =
-40°C to +85°C. Typical values are at T_A = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
INPUT SUPPLIES
Input Supply Range
Input Undervoltage Threshold
IN Quiescent Supply Current
SUPP Supply Range
SUPP Quiescent Current
SUPN Supply Range
SUPN Quiescent Current
MAIN BOOST CONVERTER
Output Voltage Range
FB Regulation Voltage
FB Undervoltage Shutdown
Threshold
Operating Frequency
LX Switch On-Resistance
LX Current Limit
POSITIVE CHARGE PUMP
V_SUPP Input Supply Range
V_SUPP Overvoltage Threshold
FBP Regulation Voltage
NEGATIVE CHARGE PUMP
V_SUPN Input Supply Range
FBN Regulation Voltage
V_LOGIC REGULATOR
FBL Regulation Voltage
OUTL On-Resistance
REFERENCE
Reference Voltage
Reference Undervoltage
Threshold
LOGIC SIGNALS
LCDON, SHDN Input Low
Voltage
LCDON, SHDN Input High
Voltage
SYMBOL
CONDITIONS
V_IN
V_UVLO
I_IN
V_SUPP
I_SUPP
V_SUPN
I_SUPN
V_IN rising, 100mV hysteresis (typ)
V_FB = V_FBP = 1.5V, V_FBN = -0.2V
V_FBP = 1.5V
V_FBN = -0.2V
V_MAIN
V_FB
FB falling
f_OSC
R_LX(ON)
I_LX(MAX)
I_LX = 100mA
Phase IV = fully on (> 3.0ms)
V_SUPP
V_FBP
V_SUPP = rising, hysteresis (typ) = 200mV
V_SUPN
V_FBN
V_FBL
I_OUTL = 0 to 300mA
V_IN = 3.3V, I_OUTL = 100mA
V_REF
-2µA < I_REF < +50µA
V_REF rising
Hysteresis = 0.15 x V_IN (typ)
MIN TYP MAX UNITS
2.6
5.5
V
2.1
2.5
V
1.5
mA
7
13
V
0.8
mA
7
24
V
0.8
mA
V_IN
1.225
75
0.75
1.08
13
1.258
200
1.25
0.7
1.8
V
V
mV
MHz
Ω
A
7
13.2
1.213
13
V
14.0
V
1.287
V
7
24
V
213
287
mV
1.220
1.275
V
1.5
Ω
1.225
0.9
1.269
V
1.2
V
0.9
V
2.1
V
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