TS1540

T S1 5 4 0 1A Low Dropout Voltage Regulator with Low Quiescent Current TO-252 (DPAK) Pin Definition: 1. Output 2. Ground 3. Input General Description TS1540 of high current LD Os has been developed for portable application where low quiescent current is an impor tant requirement. The device features excellent line and load transient response which does not exceed 10% of nominal output value for full oper ating temperature range ev en during pow er ON cycle and shor t circuit removal. Internally trimmed, temperature compensated bandgap reference guarantees 2.5% accuracy for full range of input voltage, outpu t current and temper ature. Included on the chip are accurate current limit and thermal shutdown protection. Device stability is achieved with only two external low ESR cer amic capacitors. Features ● ● ● ● ● ● ● Very Low Ground Current ( IGND = 1mA) Excellent Line Regulation Excellent Load Regulation Very Low transient Overshoot Stable with low ESR output Capacitor ( ESR = 0mΩ) Thermal Shutdown Current Limit Ordering Information Part No. Package Packi ng TS1540C Pxx RO TO-252 2.5Kpcs / 13” Reel Note: W here xx denotes voltage option, available are 50= 5.0V 33= 3.3V 25= 2.5V 18= 1.8V 15= 1.5V Leave blank for adjustable version. Application ● ● ● Disk Drive C ircuits Desktop C omputers Laptop, Notebook Computers Typical Application Circuit Block Diagram Fixed Out put Voltage Version VOUT = VREF(1+R2/R1) + Iadj R2 Adjustable Out put Voltage Version Note: 1. Use Low ESR Capac itors . 2. CIN should be placed as closed to VIN as possible 1/4 Version: A07 T S1 5 4 0 1A Low Dropout Voltage Regulator with Low Quiescent Current Absolute Maximum Rating (Note 1) Parameter Input Supply Voltage Recommend Operation Input Supply Voltage Power Dissipation (Note 2) Thermal R esistance Junc tion to Ambient Operating Temperature Range Junction Temperature Range Storage Temperature Range Lead Soldering Temperature (260 C) o Symbol VIN VIN (Opr. Typ.) PD ӨJ A TOPER TJ TSTG Limit 15 12 Inter nal limited 105 0 ~ +1 2 5 +1 5 0 - 6 5 ~ +1 5 0 5 Unit V V o C/W o C S Electrical Specification (Ta = 25oC, unless otherwise specified.) Parameter Reference Voltage Conditi ons VIN = 2.75, Io= 1A VIN = 3V ~ 12V, Io= 1A VIN = 3.3V ~ 12V, Io= 1A Mi n 1.225 1.470 1.764 2.450 3.235 4.900 -------- Ty p 1.25 1.5 1.8 2.5 3.3 5.0 2 30 1.0 2.5 90 1.8 0.5 Max 1.275 1.530 1.836 2.550 3.366 5.100 15 40 1.2 5 ---- Unit V V V V V V mV mV V mA uA A % Output Voltage (Note 4) VIN = 4V ~ 12V, Io= 1A VIN = 4.8V ~ 12V, Io= 1A VIN = 6.5V ~ 12V, Io= 1A Line R egulation Load R egulation (Note 1,2) Dropout Voltage Quiescent Current Adjus table Pin Current Output Current Limit Temperatur e Stability Ripple Rejec tion Vo+1.5V ≤ VIN ≤ 12V, Io= 10mA VIN = VOUT +1.5V Io= 10mA ~ 1.0A Io= 1A, ∆VOUT = 1% VOUT VIN = 5V VIN - VOUT = 3V Io=10mA, F= 120Hz, Io= 1A, COUT = 10uF, -60 70 dB VIN = Vout+3V Note 1: See thermal regulation specification for changes in output voltage due to heating effects . Line and load regulation are measured at a constant junc tion temper ature by low duty cycle pulse tes ting. Load regulation is measured at the output lead = 1/18” from the package. Note 2: Line and load regulation are guaranteed up to the maximum power dissipation of 10W . Power diss ipation is deter mined by the input / output voltage difference and the output current. Guar anteed maximum pow er dissipation will not be available over the full input / output voltage range. Note 3: Quiescent current is defined as the minimum output current r equired to maintain the regulation. Note 4: The Output Capac itor does not hav e a theoretical upper limit and increasing its value will increase stability COUT=100uF or more is typical for high current regulator design. 2/4 Version: A07 T S1 5 4 0 1A Low Dropout Voltage Regulator with Low Quiescent Current TO-252 Mechanical Drawing TO-252 DIMEN SION MILLIMETER S INCH ES MIN MAX MIN MAX 2.3BSC 0.09BSC 4.6BSC 0.18BSC 6.80 7.20 0.268 0.283 5.40 5.60 0.213 0.220 6.40 6.65 0.252 0.262 2.20 2.40 0.087 0.094 0.00 0.20 0.000 0.008 5.20 5.40 0.205 0.213 0.75 0.85 0.030 0.033 0.55 0.65 0.022 0.026 0.35 0.65 0.014 0.026 0.90 1.50 0.035 0.059 2.20 2.80 0.087 0.110 0.50 1.10 0.020 0.043 0.90 1.50 0.035 0.059 1.30 1.70 0.051 0.67 DIM A A1 B C D E F G G1 G2 H I J K L M Marking Diagram Y M = Year Code = Month C ode (A=Jan, B =Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep, J=Oc t, K=Nov , L=Dec) = Lo t C ode = Voltage Code (15=1.5V, 18=1.8V, 25=2.5V, 33=3.3V, 50=5V) = Package code for Adjustable type ( C P = T O- 2 5 2 ) L XX 3/4 Version: A07 T S1 5 4 0 1A Low Dropout Voltage Regulator with Low Quiescent Current Notice Specifications of the produc ts displayed herein are s ubject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Infor mation contained herein is intended to pr ovide a product description only. N o license, express or implied, to any intellectual proper ty rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for such products , TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of TSC products including liability or warranties relating to fitness for a par ticular purpose, merchantability, or infringement of any patent, copyright, or other intellectual proper ty right. The products shown herein are not designed for use in medical, life-saving, or life-sus taining applications . C ustomers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale. 4/4 Version: A07