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1x/1.5x/2x White LED Charge Pumps with Two
LDOs in 4mm x 4mm TQFN
ABSOLUTE MAXIMUM RATINGS
PIN, IN, OUT, REFBP to GND................................-0.3V to +6.0V
SETF, SETM, ENLDO, ENM1, ENM2, ENF,
P1, P2, LDO1, LDO2 to GND....................-0.3V to (V IN + 0.3V)
M1, M2, M3, M4, M5, M6, F1,
F2 to GND.............................................-0.3V to (V OUT + 0.3V)
C1N, C2N to GND ......................................... -0.3V to (V IN + 1V)
C1P, C2P
to GND........ -0.3V to the greater of (V OUT + 1V) or (V IN + 1V)
OUT, LDO1, LDO2 Short Circuit to GND ...................Continuous
Continuous Power Dissipation (T A = +70°C)
28-Pin TQFN 4mm x 4mm
(derate 20.8mW/°C above +70°C) .............................1666mW
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
PGND to GND .......................................................-0.3V to +0.3V
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 IN = 3.6V, V GND = V PGND = 0V, ENM1 = ENM2 = ENF = IN, R SETM = R SETF = 6.8k Ω , P1 = P2 = unconnected, C REF = 0.01μF,
T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
PARAMETER
IN Operating Voltage
Undervoltage-Lockout Threshold
V IN rising or falling
CONDITIONS
MIN
2.7
2.25
TYP
2.45
MAX
5.5
2.60
UNITS
V
V
Undervoltage-Lockout Hysteresis
1MHz switching, no load, 1.5x or 2x mode
130
4.0
5.5
mV
Supply Current
1x mode 10% setting, ENF = GND, V ENLDO = V IN ,
I LDO1 = I LDO2 = 0A
ENM1 = ENM2 = ENF = GND, V ENLDO = V IN ,
I LDO1 = I LDO2 = 0A
0.4
110
mA
μA
Shutdown Supply Current
ENM1 = ENM2 = ENF = ENLDO = GND
T A = +25°C
T A = +85°C
0.01
0.1
5
μA
EN_ High Voltage
EN_ Low Voltage
V IN = 2.7V to 5.5V
V IN = 2.7V to 5.5V
1.4
0.4
V
V
EN_ Input Current
ENM_ or ENF Low Shutdown
Delay t SHDN
ENM_ or ENF t LO
V EN_ = 0V or 5.5V
See Figure 1
See Figure 1
T A = +25°C
T A = +85°C
2.5
0.5
0.01
0.1
1
250.0
μA
ms
μs
ENM_ or ENF t HI
Initial ENM_ or ENF t HI
P1, P2 Shutdown Input Current
P1, P2 Input Impedance
See Figure 1
Only required for first ENM_ or ENF pulse; see Figure 1
0.5
200
1
150
μs
μs
μA
k Ω
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
Temperature rising
+160
20
°C
°C
CHARGE PUMP
Overvoltage-Protection Threshold
Soft-Start Time
V OUT rising
5
2
V
ms
2
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