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PDF RT9037 Data sheet ( Hoja de datos )
| Número de pieza | RT9037 | |
| Descripción | Ultra-Fast CMOS LDO Regulator | |
| Fabricantes | Richtek | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9037 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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RT9037
300mA, Low Noise, Ultra-Fast CMOS LDO Regulator
General Description
The RT9037 is designed for portable RF and wireless
applications with demanding performance and space
requirements. The RT9037 performance is optimized for
battery-powered systems to deliver ultra low noise and
low quiescent current. Regulator ground current increases
only slightly in dropout, further prolonging the battery life.
The RT9037 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in hand-held wireless devices. The
RT9037 consumes less than 0.01uA in shutdown mode
and has fast turn-on time less than 50us. The other features
include ultra low dropout voltage, high output accuracy,
current limiting protection, and high ripple rejection ratio.
Available in the SOT-23-5 package, the RT9037 also offers
a wide output voltage range from 3.3V to 5V with 0.1V per
step.
Ordering Information
RT9037
Package Type
B : SOT- 23-5
BR : SOT- 23-5 (R-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Output Voltage
33 : 3.3V
34 : 3.4V
:
49 : 4.9V
50 : 5.0V
1H : 1.85V
2H : 2.85V
4G : 4.75V
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
DS9037-01 April 2011
Features
z Low-Noise for RF Application
z Fast Response in Line/Load Transient
z Quick Start-Up (Typically 50us)
z < 0.01uA Standby Current When Shutdown
z Low Dropout : 220mV @ 300mA
z Wide Operating Voltage Ranges : 2.5V to 5.5V
z TTL-Logic-Controlled Shutdown Input
z Low Temperature Coefficient
z Current Limiting Protection
z Thermal Shutdown Protection
z Only 1uF Output Capacitor Required for Stability
z High Power Supply Rejection Ratio
z Custom Voltage Available
z RoHS Compliant and Halogen Free
Applications
z CDMA/GSM Cellular Handsets
z Battery-Powered Equipment
z Laptop, Palmtops, Notebook Computers
z Hand-Held Instruments
z PCMCIA Cards
z Portable Information Appliances
Pin Configurations
(TOP VIEW)
VIN VOUT
54
23
EN NC GND
SOT-23-5
VOUT
5
NC
4
23
VIN GND EN
SOT-23-5 (R-Type)
www.richtek.com
1
1 page  
Typical Operating Characteristics
Output Voltage vs. Temperature
2 VIN = 5V
CIN = COUT = 1uF
1.9
1.8
No Load
1.7
1.6
-50
-25
0 25 50 75
Temperature (°C)
100 125
EN Threshold Voltage vs. Temperature
1.50 RT9037-15
1.25
VIN = 3.3V
CIN = COUT = 1uF
1.00
0.75
0.50
0.25
-50
-25
0 25 50 75
Temperature (°C)
100 125
Dropout Voltage vs. Load Current
300
VOUT = 3.3V
CIN = COUT = 1uF
250
TJ = 125°C
200 TJ = 25°C
150
TJ = -40°C
100
50
0
0 0.05 0.1 0.15 0.2 0.25 0.3
Load Current (A)
DS9037-01 April 2011
RT9037
Quiesent Current vs. Temperature
100 VIN = 3.3V
95 CIN = COUT = 1uF
90
85
80
75
70
65
60
-50
-25
0 25 50 75
Temperature (°C)
100 125
Current Limit vs. Input Voltage
600 CIN = COUT = 1uF
550
500
450
400
350
300
2 2.5 3 3.5 4 4.5 5 5.5 6 6.5
Input Voltage (V)
PSRR
20
VOUT = 2.5V
CIN = COUT = 1uF, X7R
0
-20
-40
ILOAD = 100mA
-60
ILOAD = 10mA
-80
01.001 100.10
11K 1100K
Frequency (kHHzz) )
110000K
110M00
www.richtek.com
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet RT9037.PDF ] | |
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