Rainbow Electronics MAX8614B - Manual (Page 4)

MAX8614A/MAX8614B
Dual-Output (+ and -) DC-DC
Converters for CCD
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ELECTRICAL CHARACTERISTICS
(V CC = V AVCC = V ONINV = V ONBST = V EN = 3.6V, PGND = SEQ = GND, C6 = 0.22µF, C1 = 2.2µF, C2 = 6.7µF, Figure 1, T A = -40°C
to +85°C, unless otherwise noted.) (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
A VCC = V CC Voltage Range (Note 1) 3 5.5 V
UVLO Threshold V CC rising 2.42 2.82 V
Step-Up Output Voltage Adjust Range V AVCC 24 V
Inverter Output Voltage Adjust Range V INV - V CC (Note 2) -16 0 V
MAX8614B 0.7 0.9
LXP Current Limit
MAX8614A 0.34 0.52
A
MAX8614B 0.9 1.2
LXP Short-Circuit Current Limit
MAX8614A 0.52 0.70
A
MAX8614B 0.65 0.85
LXN Current Limit
MAX8614A 0.28 0.38
A
LXN On-Resistance V CC = 3.6V 1.1 Ω
PVP On-Resistance V CC = 3.6V 0.3 Ω
Maximum Duty Cycle Step-up and inverter 82 %
I AVCC 1.4
Quiescent Current (Switching, No Load)
I
VCC
3
mA
I AVCC 800
Quiescent Current (No Switching, No Load)
I VCC 15
µA
Oscillator Frequency 0.93 1.07 MHz
FBP, FBN, REFERENCE
REF Output Voltage No load 1.235 1.260 V
FBP Threshold Voltage No load 0.995 1.025 V
FBN Threshold Voltage No load -10 +10 mV
ONINV, ONBST SEQ LOGIC INPUTS
Logic-Low Input 2.7V < V AVCC < 5.5V 0.5 V
Logic-High Input 2.7V < V AVCC < 5.5V 1.6 V
Note 1: Output current and on-resistance are specified at 3.6V input voltage. The IC operates to 2.7V with reduced performance.
Note 2: The specified maximum negative output voltage is referred to V
CC , and not to GND. With V CC = 3.3V, the maximum negative
output is then -12.7V.
Note 3: Specifications to -40°C are guaranteed by design, not production tested.