MIKROE-957 mikroElektronika, MIKROE-957 Datasheet - Page 80

• Manufacturer Part Number: MIKROE-957
• Description: Other Development Tools ASLK PRO ANALOG DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-957

• Rohs: yes
• Product: Analog System Lab Kit PRO
• Tool Is For Evaluation Of: TL082, MPY634
• Operating Supply Voltage: 2.5 V to 5.5 V
• Description/function: Analog Lab Kit for Undergraduate Engineering
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C

page 80
Micropower Low-Dropout (LDO) Voltage Regulator
A.5.1 Features
• A vailable in 5-V, 4.85-V, 3.3-V, 3.0-V, and 2.5-V
• D ropout Voltage <85 mV Max at IO = 100 mA
• L ow Quiescent Current, Independent of Load, 180
• 8-Pin SOIC and 8-Pin TSSOP Package
• O utput Regulated to ±2% Over Full Operating
• Extremely Low Sleep-State Current, 0.5 mA Max
• Power-Good (PG) Status Output
A.5.3 Description
The TPS72xx family of low-dropout (LDO) voltage
regulators offers the benefits of low-dropout
voltage,
packaging. These regulators feature extremely low
dropout voltages and quiescent currents compared to
conventional LDO regulators. Offered in small-outline
integrated-circuit (SOIC) packages and 8-terminal
thin shrink small-outline (TSSOP), the TPS72xx
Fixed-Output and Adjustable Versions
(TPS7250)
mA Typ
Range for Fixed-Output Versions
micropower operation, and miniaturized
Figure A.5: TPS7250 -Micropower Low-Dropout (LDO) Voltage Regulator
0.1 F
V I
series devices are ideal for cost-sensitive designs
and for designs where board space is at a premium.
A combination of new circuit design and process
innovation has enabled the usual pnp pass transistor
to be replaced by a PMOS device. Because the PMOS
pass element behaves as a ue resistor, the dropout
voltage is very low – maximum of 85 mV at 100 mA
of load current (TPS7250) – and is directly proportional
5
6
4
IN
IN
EN
A.5.2 Applications
• Wireless Handsets
• Smart Phones, PDAs
• MP3 Players
• ZigBeeTM Networks
• BluetoothTM Devices
• Li-Ion Operated Handheld Products
• WLAN and Other PC Add-on Cards
TPS7250
GND
SENSE
3
OUT
OUT
PG
2
1
7
8
+
CSR = 1 
10 F
C O
250 k
PG
V O
to the load current. Since the PMOS pass element
is a voltage-driven device, the quiescent current is
very low (300 mA maximum) and is stable over the
entire range of output load current (0 mA to 250 mA).
Intended for use in portable systems such as laptops
and cellular phones, the low-dropout voltage and
micropower operation result in a significant increase
in system battery operating life.
A.5.4 Download Datasheet
http://www.ti.com/lit/gpn/tps7250
TPS7250
Analog System Lab Kit PRO