SA57003 Datasheet, PDF (2/16 Pages) NXP Semiconductors – Five-output composite voltage regulator

Philips Semiconductors
Five-output composite voltage regulator
Product data
SA57003
GENERAL DESCRIPTION
The SA57003 is a very low noise, low dropout voltage regulator with
three independent preset outputs from 2.0 V to 5.0 V and two
dependent outputs regulated from 2.82 V up to V_OUT3. The output
current is the same for all three independent outputs 1, 2, 3 and
each output is capable of supplying 200 mA. The other two
dependent outputs 4, 5 are capable of supplying current up to
185 mA and 195 mA, respectively. Additionally, the SA57003 has an
independent ON/OFF input pin for each output to allow individual
subcircuits to be turned off when not needed, making the device
very useful for applications where power conservation is important.
The independent output voltage regulators V_OUT1, V_OUT2, and
V_OUT3 have a common input voltage pin, V_IN. The dependent output
voltage regulators, V_OUT4 and V_OUT5 have a common input voltage
pin, V_OUT3.
The SA57003 regulator is offered in the TSSOP16 package.
FEATURES
• V_OUT tolerance ±3% over temperature range –40 °C to +85 °C
• ON/OFF input pin (logic-controlled shut-down) for each output
• Very low dropout voltage (0.15 V typical for Outputs 1, 2, 3 and
0.25 V for Outputs 4, 5)
• No load quiescent current of 170 µA
• Maximum input voltage of 12 V
• Internal current and thermal limit
• Supply voltage rejection: 60 dB (typical) @ f = 1.0 kHz
• Internal trimmed voltage reference
APPLICATIONS
• Mobile phones
• Video cameras
• Portable battery-powered telemetry equipment.
SIMPLIFIED SYSTEM DIAGRAM
ON/OFF₄
ON/OFF₅
ON/OFF₁
ON/OFF₃
ON/OFF₂
V_IN
C_IN
10 µF
1
16
2
15
3
14
4
13
SA57003
5
12
6
11
7
10
8
9
V_OUT1
V_OUT3
V_OUT5
V_OUT4
V_OUT2
2003 Oct 13
C_NS1,2,3 (optional)
0.01 µF CERAMIC
C_OUT1,2,3,4,5
1.0 µF CERAMIC OR TANTALUM
SL01421
Figure 1. Simplified system diagram.
2