Rainbow Electronics MAX8514 - Manual (Page 6)

MAX8513/MAX8514
Wide-Input, High-Frequency, Triple-Output Supplies
with Voltage Monitor and Power-On Reset
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ELECTRICAL CHARACTERISTICS (continued)
(V IN = V LX = V SUP2 = 12V, V PVL = V BST - V LX = V DRV3P = 5V, V SUP3N = 3.3V, V DRV3N = -5V, C VL = 4.7µF, C REF = 0.22µF, R FREQ =
15.0kΩ, T A = -40°C to +125°C (Note 2), unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN MAX UNITS
OUT1 (BUCK CONVERTER)
Output Voltage Range V OUT1 (Note 1) 1.25 5.50 V
FB1 Regulation Threshold V FB1 1.225 1.265 V
Error-Amplifier Open-Loop
Voltage Gain
A VOL 65 dB
FB1 Input Bias Current I FB1_BIAS V FB1 = 1.3V -200 +200 nA
DH Output-Resistance High R DH_HIGH 2.55 Ω
DH Output-Resistance Low R DH_LOW 2.1 Ω
DL Output-Resistance High R DL_HIGH 5
Ω
DL Output-Resistance Low R DL_LOW 1.3 Ω
V ILIM = 2.00V, V CSN = 0 to 5.5V 243 303
V ILIM = 0.50V, V CSN = 0 to 5.5V 49 83
Current-Limit Threshold
(Positive)
V CS
V ILIM = V VL , V CSN = 0 to 5.5V 147 190
mV
V ILIM = 2.00V, V CSN = 0 to 5.5V -333 -199
V ILIM = 0.50V, V CSN = 0 to 5.5V -90 -42
Current-Limit Threshold
(Negative)
V CS
V
ILIM
= V
VL
, V
CSN
= 0 to 5.5V -210 -122
mV
CSP and CSN Bias Current V CSP = V CSN = 0 to 5.5V -120 +135 µA
ILIM Bias Current V ILIM = 1.25V -5.7 -4.3 µA
SS Soft-Start Charge Current V SS = 0.6V 15 35 µA
Soft-Start Discharge Resistance 200 Ω
LX, BST, PVL Leakage Current
V LX = V IN = 28V, V BST = 33V, V PVL = 5V,
V SYNC/EN = 0
20 µA
FB1 Power-On Reset Threshold 1.08 1.20 V
OUT2 (POSITIVE LDO)
SUP2 Operating Range V SUP2 (Note 1) 4.5 28.0 V
DRV2 Clamp Voltage V
DRV2
V
FB2
= 0.75V 7.75 9.00 V
SUP2 Supply Current 300 µA
SUP2 Shutdown Supply Current V SYNC/EN = 0 10 µA
FB2 Regulation Voltage V FB2 0.775 0.816 V
FB2 Input Bias Current I FB2_BIAS V FB2 = 0.75V 150 nA
DRV2 Output Current Limit V IN = 5V, V DRV2 = 5V, V FB2 = 0.77V 12 mA
DRV2 Output Current Limit
During Soft-Start
V IN = 6V, V DRV2 = 5V, V FB2 = 0.70V 8 12 mA
FB2 Power-On Reset Threshold 0.690 0.742 V
FB2 to DRV2 Transconductance G C2 I DRV2 = +250µA, -250µA 0.11 0.41 S