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TS9004
300mA CMOS LDO Adjustable Voltage with Enable & Power Good
Pin assignment 1. Input 6. Output 2. Ground 5. Feedback 3. Enable 4. Power Good
Low Drop Out Voltage 0.4V Adjustable Voltage Enable Shutdown Power Good
General Description
The TS9004 is a positive voltage linear regulator developed utilizing CMOS technology featured low quiescent current (30uA typ.), low dropout voltage, and high output voltage accuracy, making them ideal for battery applications. The Chip Enable (CE) includes a CMOS or TTL compatible input allows the output to be turned off to prolong battery life. The TS9004 is included a precision voltage reference, current fold-back, error correction circuit, a current limited output driver, over temperature shutdown, and a "Power Good" detector, which pulls low when the output is out of regulation. This series are offered in 6-pin SOT-26 package.
Features
Dropout voltage typically 0.4V@Io=300mA (Vo>2.5V) Low power consumption: 30uA (typ.) Output voltage +/-2.5% Internal current limit and thermal shutdown Short circuit current fold-back Power saving shutdown mode Power good output function Adjustable output vlotage
Applications
Palmtops Video recorders Battery powered equipment PC peripherals High-efficiency linear power supplies Digital signal camera
Typical Application Circuit
Ordering Information
Part No. Operating Temp. (Ambient)
-40 ~ +85 oC
Package
SOT-26
TS9004
TS9004CX6
Block Diagram
TS9004
1-1
2003/12 rev. B
Absolute Maximum Rating
Input Supply Voltage Enable Input Voltage Output Current Power Dissipation Thermal Resistance Operating Ambient Temperature Range Operating Junction Temperature Range Storage Temperature Range Lead Soldering Temperature (260 oC) ESD Classification HBM Vin Vce Io PD ja Ta Tj TSTG +7 Gnd-0.3 ~ Vin+0.3 Pd / (Vin - Vout) Internal Limited (note) 260 -40 ~ +85 -40 ~ +125 -65 ~ +150 10 2k
o
V V
C/W
o o o
C C C
S V
Caution: Stress above the listed absolute rating may cause permanent damage to the device. Note: Pd(max) = [Tj(max) - Ta] / ja, where ja depends on the printed circuit layout
Electrical Characteristics (Ta = 25 oC, Vin= Vin(min), Vce2V, unless otherwise specified.)
Parameter
Input Voltage Bandgap Reference Vout Temperature Coefficient Maximum Output Current Output Current Limit Short Circuit Current (note 3) Line Regulation Load Regulation Dropout Voltage Vin=Vo+1V, Vout=0V Vout< 0.8V Vo+1V Vin Vo+2V, Io= 1mA 1mAIL300mA Io=300mA, Vout=Vo - 2% Quiescent Current Quiescent Current Ground Pin Current Power Supply Rejection Ratio Over Temperature Shutdown Output Noise Enable Input Enable Input Logic-High Voltage Enable Input Logic-Low Voltage Enable Input Current Vin= 2.7V to 7V Vin= 2.7V to 7V Ven 0.4V Ven= Vin -0 --Vin/2+0.8V Vin/2-0.8V --Vin -3 0.1 V V uA Io=10mA, f=10Hz~100kHz, Co=2.2uF Vin0.4V (shutdown) Vout0.4V, Io=0mA Io= 1mA ~ 300mA Io=100mA, At f=1kHz, At f=10kHz, Vout2.0V Vout<2.0V Vout2.0V Vout<2.0V Voo= VBG, Io= 10mA
Conditions
Min
Note 1 0.99|Vo| -300 ---------------
Typ
-1.176 25 -800 150 --0.2 300 800 2 30 30 60 50 150 30
Max
7 1.01|Vo| ----0.3 0.1 1.0 400 1300 -35 35 -----
Unit
V V ppm/ oC mA mA mA % % mV uA uA uA dB
o
C
uVrms
TS9004
2-2
2003/12 rev. B
Electrical Characteristics (Ta = 25 oC, Vin= Vin(min), Vce2V, unless otherwise specified.)
Power Good PG Low Threshold PG High Threshold PG leakage current PG voltage rating PG voltage low Delay Time to PG (note 2) % of Vo (PG ON) % of Vo (PG OFF) VPG = 7V Vo in regulation Isink = 0.4mA Vin= 5V Vin= 3V 89.5 -----------8 4 85 96.5 1 7 0.4 --uA V V mS %
Note 1: Vin(min) = Vout + Vdropout Note 2: Guaranteed by design, not 100% tested. Note 3: Short circuit current and current limit value will be increased as input voltage is larger than Vin(min)
Detail Description
Description
The TS9004 series of CMOS regulators contain a P-MOS pass transistor, voltage reference, error amplifier, over current protection, thermal shutdown and power good function. The TS9004 series switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over stress. The TS9004 also incorporates current fold-back to reduce power dissipation when the output is short circuit. This feature becomes active when the output drops below 0.8V, and reduces the current flow by 65%. Full current is restored when the voltage exceeds 0.8V. The internal P-channel pass transistor receives data from the error amplifier, over current shutdown, short output protection and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over current and thermal shutdown circuits become active when the junction temperature o exceeds 150 C, or the current exceeds 300mA. During thermal shutdown, the output voltage remains low. Normal o operation is restored when the junction temperature drops below 120 C.
Enable
The Chip Enable pin normally floats high. When actively, pulled low, the PMOS pass transistor shut off, and all internal circuits are powered down. In this state, the quiescent current is less than 1uA. This pin behaves much like an electronic switch.
External Capacitor
The TS9004 series is stable with an output capacitor to ground of 2.2uF or greater. It can keep stable even with higher or poor ESR capacitors. A second capacitor is recommended between the input and ground to stabilize Vin. The input capacitor should be larger than 0.1uF to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A "quiet" ground termination is desirable.
Power Good
The TS9002 includes the Power Good feature. When the output is not within = +/-15% of the specified voltage, it pulls low. This can occur on other condition: - - - Input voltage too low Temperature during over Current during over
TS9004
3-3
2003/12 rev. B
Typical Electrical Characteristics
TS9004
4-4
2003/12 rev. B
SOT-26 Mechanical Drawing
DIM A B C D E F H L
SOT-26 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX 2.70 3.00 0.106 0.118 0.25 0.50 0.010 0.020 1.90(typ) 0.075(typ) 0.95(typ) 0.037(typ) 1.50 1.70 0.059 0.067 1.05 1.35 0.041 0.053 2.60 3.00 0.102 0.118 0.60(typ) 0.024(typ)
TS9004
5-5
2003/12 rev. B

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