WM8352 Datasheet, PDF (18/336 Pages) Wolfson Microelectronics plc – Wolfson AudioPlus™ Stereo CODEC with Power Management

WM8352
Production Data
7.2 DC-DC STEP UP CONVERTER ELECTRICAL CHARACTERISTICS
Test Conditions
TA = +25ºC unless otherwise noted.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
DC-DC2 and DC-DC5
Input voltage
range
VIN
Output voltage
range
VOUT
USB OTG output
voltage
VOUT,USB
Output current
IOUT
Switch resistance
RON
Maximum switch
current
Switching
frequency
Maximum duty
cycle
Efficiency
ISW,MAX
fCLK
DMAX
Η
Quiescent current
Regulated
feedback voltage
Undervoltage
detect
Overvoltage
detect
Peak inductor
current limit
On resistance of
NGATE driver
Input capacitor
Inductor
Inductor current
rating
IDD
VFB
VCURR
VFB,UV
VUSB,UV
VFB,OV
VUSB,OV
IPK
RNGATE
CIN
LF
ISAT,Lf
Output capacitor
COUT
when used as converter
when used as switch
by default
(needs external component configuration)
VIN<4.5V; IOUT<100mA;
DCn_FBSRC [1:0]=11
VOUT=30V
VOUT=20V
(DCn_ILIM_=1)
VOUT=5.0V
(DCn_ILIM_=1)
VIN=3.3V; VOUT=3.2V; +25°C
VIN=1.8V; VOUT=1.7V; +25°C
VIN=1.2V; VOUT=1.1V; +25°C
VIN=3V; fCLK=1.0MHz
VIN=3.8V; VOUT=20V; IOUT=20mA
VIN=3.8V; VOUT=5.0V; IOUT=100mA
Shutdown or switch configuration
active; no switching
active; pulse skipping
DCn_FBSRC [1:0] = 00
DCn_FBSRC [1:0] = 01 or 10
below feedback voltage
DCn_FBSRC [1:0] = 11
above feedback voltage
DCn_FBSRC [1:0] = 11
VIN=3V; VOUT=90%;
DCn_ILIM_=1
P-Channel FET (IPFET=100mA)
N-Channel FET (INFET=100mA)
X5R/X7R dielectric
DCn_ILIM_=1
DCn_FBSRC [1:0]= 00 or 11; VOUT=5V
DCn_FBSRC [1:0]= 00; VOUT=10V
DCn_FBSRC [1:0]= 00; VOUT=20V
DCn_FBSRC [1:0]= 01 or 10; VOUT=10V
DCn_FBSRC [1:0]= 01 or 10; VOUT=15V
DCn_FBSRC [1:0]= 01 or 10; VOUT=20V
2.7
1.2
3.7
5.5
VIN
20
(30)
5.0
25
40
0
(18)
170
(100)
0.26
0.41
0.84
700
1.0
90
75
88
0.1
260
260
0.5
0.5
12
4.6
8
5.4
700
450
4.6
4.9
1.0
2.2
-30%
10
+30%
500
320
3.7
10
22
0.84
2.2
4.7
0.18
0.47
1.0
2.0
4.7
10
1.5
2.2
10
0.9
1.5
4.7
UNITS
V
V
V
mA
Ω
mA
MHz
%
%
uA
V
%
V
%
V
mA
Ω
μF
μH
mA
μF
w
PD, February 2011, Rev 4.4
18