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XC9519 Datasheet Preview

XC9519 Datasheet

Dual Output Step-Up/Inverting DC/DC Converter

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XC9519 Series
ETR0710-009
Dual Output Step-Up/Inverting DC/DC Converter
GENERAL DESCRIPTION
The XC9519 series is a 2 channel (step-up and inverting) DC/DC converter IC. One DC/DC converter is a step-up DC/DC and the other is an
inverting DC/DC converter. The step-up converter compares a built-in reference voltage 1.0V to the FBP voltage (accuracy ±1.5%) and a
positive output voltage can be set freely with the external components up to 18V. The inverting DC/DC converter compares a difference
between a reference voltage and the FBN voltage (accuracy ±1.5%) to the GND, then a negative output voltage can be set until -15V with the
external components.
With a 1.2MHz frequency, the size of the external components can be reduced. As for operation mode, the device can be selected to use PWM
control or automatic PWM/PFM switching control by the MODE pin. In the automatic PWM/PFM switching control mode, control switches from
PWM to PFM during light loads. The series is highly efficient from light loads through to large output currents. In the PWM control mode,
noise is easily reduced since the frequency is fixed. The control mode can be selected for each application. The soft start and current control
functions are internally optimized. During stand-by, all circuits in the IC are shutdown to reduce current consumption to as low as 1.0μA or
less. The device includes a gate control pin for the P-channel MOSFET which is used for a load disconnection at the stand-by mode. The
GAINP and GAINN pins are used for loop compensation in order to optimize load transient response. With the built-in UVLO (Under Voltage
Lock Out) function, the internal driver transistor is forced OFF when input voltage becomes 2.2V or lower.
APPLICATIONS
AMOLED
- Smartphones
- Tablet PCs
- Automotive navigation systems
CCD image sensors
- Surveillance cameras
e-paper
-e-Books
TYPICAL APPLICATION CIRCUIT
FEATURES
Input Voltage
: 2.7V ~ 5.5V
Output Current
Positive Output Voltage
Negative Output Voltage
: 500mA @VIN=3.7V, VOUTP=5.0V, VOUTN=-5.0V
: 4.0V (*1) ~ 18.0V (accuracy ±1.5% @25oC)
: -15.0V (*2) ~ -4.0V (accuracy ±1.5% @25oC)
Oscillation Frequency
: 1.2MHz
Soft-Start Circuit Built-In : Step-up DC/DC converter 2.5ms (TYP.)
: Inverting DC/DC converter 2.2ms (TYP.)
Protection Circuits
: Over Current Limit (Integral Latching)
Short Protection Latching
UVLO
Thermal Shutdown
Over Voltage Protection
Function Addition
: Control Pin
Load disconnect Pin
Phase Compensation Pin
Operating Ambient Temperature
Package
Ceramic Capacitor Compatible
: -40~ +85
: QFN-24
Environmentally Friendly
: EU RoHS Compliant, Pb Free
*1VOUTPSETVIN + 0.2V (VOUTPSET :Positive output voltage range)
*2VIN - VOUTNSET+ VFN21.0V
(VFN : Forward voltage of SBDN, VOUTNSET : Nagative output voltage range)
TYPICAL PERFORMANCE
CHARACTERISTICS
LP
P-ch MOS
BSW
PVIN
AVIN
ENP
VIN
CIN_SW CIN_P CIN_A ENN
AGND
PGND
SWP
SBDP
LXP
VOUTP
FBP
VREF
CFBP
RSP
VOUTP
RFBP1
CLP
RFBN2
CL_VR
RFBP2
XC9519
FBN
MODE
VOUTN
GAINP
LXN
GAINN
RZP
RZN
CZP
CZN
RFBN1
SBDN
CLN
LN
VOUTN
VOUTP=5.0V, VOUTN=-5.0V, IOUTP=IOUTN
CLP, CLN=4×4.7μF, LP, LN=3.3μH (VLF5014S-3R3M2R0), SBDP, SBDN: CMS03
P-ch MOS: EMH1303, RZP=7.5kΩ, CZP=4.7nF, RZN=130kΩ, CZN=0.47nF
100
VENP="H",VENN="H"
80
60
VIN= 4.4V
3.6V
2.7V
40
20
0
0.1
PWM/PFM (VMODE="H")
PWM (VMODE="L")
1
10
100
Output Current:IOUTP, IOUTN (mA)
1000
1/38




Torex

XC9519 Datasheet Preview

XC9519 Datasheet

Dual Output Step-Up/Inverting DC/DC Converter

No Preview Available !

XC9519 Series
BLOCK DIAGRAM
* Diodes inside the circuit are an ESD protection diode and a parasitic diode.
PRODUCT CLASSIFICATION
Ordering Information
XC9519①②③④⑤⑥-⑦
DESIGNATOR
②③
⑤⑥-⑦ (*1)
ITEM
UVLO Detect Voltage
Oscillation Frequency
Maximum Current Limit
Package (Order Unit)
SYMBOL
A
12
A
ZR-G
DESCRIPTION
UVLO Detect Voltage 2.2V
UVLO Hysteresis width 0.2V
1.2 MHz
2.0A
QFN-24 (1,000/Reel) (*2)
(*1) The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant.
(*2) The XC9519 reels are shipped in a moisture-proof packing.
2/38



Part Number XC9519
Description Dual Output Step-Up/Inverting DC/DC Converter
Maker Torex
Total Page 3 Pages
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XC9519 Datasheet PDF





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