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参数资料
| 型号： | XC9519A12AZR-G |
| 厂商： | Torex Semiconductor Ltd |
| 文件页数： | 1/38页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST INV ADJ 2A DL 24QFN |
| 标准包装： | 1 |
| 类型： | 升压（升压），反相 |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 4 V ~ 18 V，-4 V ~ -15 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 24-QFN（4x4） |
| 其它名称： | 893-1168-6 |
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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 1.0 μ A 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.
Positive Output Voltage
: 4.0V
~ 18.0V (accuracy ±1.5% @25 C)
Negative Output Voltage
: -15.0V
~ -4.0V (accuracy ±1.5% @25 C)
■ APPLICATIONS
● AMOLED
- Smartphones
- Tablet PCs
- Automotive navigation systems
● CCD image sensors
- Surveillance cameras
● e-paper
-e-Books
■ FEATURES
Input Voltage : 2.7V ~ 5.5V
Output Current : 500mA @V IN =3.7V, V OUTP =5.0V, V OUTN =-5.0V
(*1) o
(*2) o
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
Ceramic Capacitor Compatible
Operating Ambient Temperature
: -40 ℃ ~ +85 ℃
Package : QFN-24
Environmentally Friendly
: EU RoHS Compliant, Pb Free
（ *1 ） V OUTPSET ≧ V IN + 0.2V (V OUTPSET :Positive output voltage range)
（ *2 ） V IN - V OUTNSET + V FN ≦ 21.0V
(V FN : Forward voltage of SBD N , V OUTNSET : Nagative output voltage range)
■ TYPICAL APPLICATION CIRCUIT
■ TYPICAL PERFORMANCE
CHARACTERISTICS
V OUTP =5.0V, V OUTN =-5.0V, I OUTP =I OUTN
C LP , C LN =4×4.7 μ F, L P , L N =3.3 μ H (VLF5014S-3R3M2R0), SBD P , SBD N : CMS03
P-ch MOS
L P
BSW
SWP
SBD P
LXP
VOUTP
FBP
C FBP
R SP
R FBP1
V OUTP
C LP
P-ch MOS: EMH1303, R ZP =7.5k Ω , C ZP =4.7nF, R ZN =130k Ω , C ZN =0.47nF
100
V ENP ="H",V ENN ="H"
80
PVIN
VREF
AVIN
R FBN2
C L_VR
R FBP2
60
3.6V
V IN = 4.4V
V IN
C IN_SW C IN_P
C IN_A
ENP
ENN
XC9519
FBN
MODE
R FBN1
40
2.7V
AGND
VOUTN
V OUTN
PGND
LXN
SBD N
20
PWM/PFM (V MODE ="H")
GAINP
R ZP
GAINN
R ZN
L N
C LN
0
PWM (V MODE ="L")
C ZP
C ZN
0.1
1
10
100
1000
Output Current:I OUT P , I OUT N (mA)
1/38
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