Diodes AP6714 - Manual (Page 3)

AP6714
1.8MHz SYNCHRONOUS BOOST CONVERTER
AP6714
Document number: DS31490 Rev. 5 - 2
3 of 11
www.diodes.com
April 2011
© Diodes Incorporated
Recommended Operating Conditions
Symbol Parameter Rating Unit
T
A
Operating Ambient Temperature Range -40 to +85
o
C
V
IN
Supply Voltage at V
IN
(Note 3) 0.9 to 5.5 V
V
OUT
Output Voltage 1.8 to 5.5 V
Notes: 3. The AP6714 is powered by step-up output. An internal low-voltage startup oscillator drives the starting at approximately 0.9V and the main
control will take over as soon as output is reached. AP6714 operation could be kept in low input voltage and output current is just limited.
Electrical Characteristics (V
CC
= 3V, T
A
= 25
°C, unless otherwise specified)
Symbol Parameter Conditions Min Typ. Max Unit
GENERAL
I
STB
Standby Current V
CC
= 3.6V ,V
EN
= 0V - 0.5 1 µA
I
CC
Supply Current V
CC
= EN = 3.6V, FB = 1.5V - 150 300 µA
REFERENCE
V
REF
Reference Output Voltage 1.205 1.23 1.255 V
ΔV
REF
/
ΔT Tempco of Reference
-40
o
C
≤ T ≤ 125 o
C 30 50 ppm/
o
C
V
REF(LOAD)
Reference Load Regulation 10mA < I
LOAD
< 200mA - 4.5 10 mV
V
REF(LINE)
Reference Line Regulation 2.8 < V
CC
< 5.5V - 1.3 5 mV
OSCILLATOR
F
OSC
OSC Frequency 1400 1800 2200 KHz
STEP-UP DC-TO-DC
ΔV
OUT
/
ΔT Tempco of Output Voltage
I
OUT
= 10mA, -40 o C
≤ T≤ 85 o C 50 100 ppm/ o C
FB Input Leakage Current FB = 1.25V -100 0.01 +100 nA
Duty Step-Up Maximum Duty Cycle FB = 0V 80 85 90 %
I
OUT
OUT Leakage Current V
LX
= 0V, OUT = 5V - 1 5 µA
I
LXL
LX Leakage Current V
LX
= OUT = 5V - 2 5 µA
R
DS(ON)
Switch On-Resistance
N channel, Vcc = 5V - 200 -
m Ω
P channel, Vcc = 5V - 300 -
I
LM
N-Channel Current Limit V
IN
= 1.5V (Note 4) 1.2 1.4 1.6 A
THERMAL-SHUTDOWN PROTECTION
Thermal Shutdown - 150 - o C
Thermal Hysteresis - 40 - o C
LOGIC INPUTS
EN Input Low Level 1.5V < V
CC
< 5.5V - - 0.4 V
EN Input High Level 1.5V < V
CC
< 5.5V 0.8 - - V
OVER CURRENT PROTECTION
V
OCP
Over Current Protection Voltage R
OCP
= 0.1 Ω - 0.16 - V
THERMAL RESISTANCE
θ
JA
Thermal Resistance Junction-to-
Ambient
MSOP-10L (Note 5) 161
o
C/W
θ
JC
Thermal Resistance
Junction-to-Case
MSOP-10L (Note 5) 43 o C/W
Notes: 4. The step-up current limit in startup refers to the LX switch current limit, not the output current limit.
5. Test condition for MSOP-10L: Device mounted on 2oz copper, minimum recommended pad layout on top & bottom layer with thermal vias,
double sided FR-4 PCB.