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MAX8969EWL50 Datasheet(PDF) 10 Page - Maxim Integrated Products

Part # MAX8969EWL50
Description  Step-Up Converter for Handheld Applications
Download  15 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX8969EWL50 Datasheet(HTML) 10 Page - Maxim Integrated Products

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10
Maxim Integrated
Step-Up Converter
for Handheld Applications
MAX8969
Figure 2. State Diagram
TRUE SHUTDOWN
N1 = OFF
P1 = OFF
IQ = 1µA (typ)
TRACK MODE*
N1 = OFF
P1 = CURRENT-
LIMITED SWITCH
IQ = 30µA (typ)
AUTOMATIC TRACK
MODE (ATM)*
N1 = OFF
P1 = CURRENT-
LIMITED SWITCH
IQ = 65µA (typ)
BOOST CIRCUITRY ENABLED
VIN
COMPARATOR
BOOST SOFT-START
N1 = SWITCHING
P1 = OFF
BOOST EXIT MODE
N1 = OFF
P1 = OFF
IC WAITS UNTIL
VOUT = VIN
BOOST MODE
N1 = SWITCHING
P1 = SWITCHING
VOUT = VOUT_TARGET
IQ = 45µA (SKIP MODE)
UVLO, EXCESSIVE
TEMPERATURE,
OR SHORT CIRCUIT
FROM ANY STATE
EN = 1, OR
TREN = 1
EN = 0,
TREN = 0
EN = 0,
TREN = 0
1
0
EN = 1,
VOUT > (VIN - 300mV)
VIN
COMPARATOR = 0
VIN
COMPARATOR = 1
SOFT-START
VOLTAGE RAMP
COMPLETE
OUTPUT
BELOW TARGET
[VOUT < (0.72 x
VOUT_TARGET)]
VOUT < VIN,
TREN = 0
VOUT < VIN,
TREN = 1
EN = 0
EN = 0
*EN TAKES PRIORITY OVER TREN. SEE TABLE 1.


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