MAX8969EWL50(2011) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX8969EWL50 Datasheet PDF : 15 Pages
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Step-Up Converter
for Handheld Applications
UVLO, EXCESSIVE
TEMPERATURE,
OR SHORT CIRCUIT
FROM ANY STATE
TRUE SHUTDOWN
N1 = OFF
P1 = OFF
IQ = 1µA (typ)
EN = 1, OR
TREN = 1
VOUT < VIN,
TREN = 0
VOUT < VIN,
TREN = 1
0
EN = 0,
TREN = 0
TRACK MODE*
N1 = OFF
P1 = CURRENT-
LIMITED SWITCH
IQ = 30µA (typ)
VIN
1
COMPARATOR
EN = 0,
TREN = 0
AUTOMATIC TRACK
MODE (ATM)*
N1 = OFF
P1 = CURRENT-
LIMITED SWITCH
IQ = 65µA (typ)
BOOST CIRCUITRY ENABLED
EN = 1,
VOUT > (VIN - 300mV)
OUTPUT
BELOW TARGET
[VOUT < (0.72 x
VOUT_TARGET)]
BOOST EXIT MODE
N1 = OFF
P1 = OFF
IC WAITS UNTIL
VOUT = VIN
EN = 0
BOOST SOFT-START
N1 = SWITCHING
P1 = OFF
VIN
COMPARATOR = 0
VIN
COMPARATOR = 1
EN = 0
SOFT-START
VOLTAGE RAMP
COMPLETE
BOOST MODE
N1 = SWITCHING
P1 = SWITCHING
VOUT = VOUT_TARGET
IQ = 45µA (SKIP MODE)
*EN TAKES PRIORITY OVER TREN. SEE TABLE 1.
Figure 2. State Diagram
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