eup7907 ds7907 v e r 1.2 oct . 2009 1 600ma high psrr low dr opout linear regulator description the eup7 90 7 is a high current, low dropout linear regulator with fast transient response and high psrr. it offers high output accuracy, extremely low dropout voltage, low quiescent current and fast start-up time. the eup7907 is designed to work with low-esr ceramic capacitor, reducing the amount of the pcb area necessary for power applications. only a 2.2uf ceramic capacitor can make the device stable over the whole load range. the eup7907 monitors the input voltage for power on reset to ensure the regulator is disabled when the input voltage is not high enough for normal operation. when eup7907 detects fault signal, such as over-temperature, it will turn off the pass transistor and discharge vout to gnd from the internal resistor. the eup7907 has two modes of operation. when the fb pin is connected to ground, its output is a pre-set value: 0.8v~3.6v. there is no external component needed to decide the output voltage. when the version of eup7907 with fixed voltage higher than 1.5v is selected and its fb pin is connected to two external resistors divider, its output can be adjusted from 0.8v to 5v. other key features include over-current protection, thermal shutdown. the device can be available in the tdfn-8 package or sot23-5 package. feat ures z 2.5v to 5. 5v input voltage range z 300mv@600ma dropout voltage z excellent transient response z stable with 2.2uf ceramic output capacitor z 70db psrr at 1khz z low 120a quiescent current z low shutdown current:<1a z output current limit z output voltage with high accuracy: 2% initial accuracy fixed output voltage: 0.8v ~ 3.6v adjustable output voltage: 0.8v to 5v z thermal shutdown z cout auto-discharge when shutdown z rohs compliant and 100% lead (fb)-free applicat ions z cell u lar phones z bluetooth portable radios and accessories z battery-powered equipment z laptop, palmtops, notebook computer typical application cir cuit figure . 1 adjustable output v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7907 ds7907 ver 1.2 oct . 2009 2 typical application circuit (continued) figure. 2 fixed output block diagram figure. 3 n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7907 ds7907 ver 1.2 oct . 2009 3 pin configurations package type pin configurations package type pin configurations sot23-5 tdfn-8 pin description pin sot23-5 tdfn-8 description vin 1 1,2 input voltage of the ldo. gnd 2 6 signal ground. en 3 8 enable pin. connect this pin to ground or less than 0.4v to disable the device. active-high for eup7907. fb 4 5 feedback pin. this pin is the anode terminal of the error amplifier. the fb pin compares with internal reference voltage to regulate the output voltage. connect to gnd for fixed output voltage version. vout 5 3,4 output voltage of the ldo. nc -- 7 not connected. n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7907 ds7907 ver 1.2 oct . 2009 4 ordering information order number package type markin g operating temperature range eup7907-12vir1 sot23-5 xxxxx ac1t -40 c to +85c eup7907-15vir1 sot23-5 xxxxx ac1c -40 c to +85c eup7907-18vir1 sot23-5 xxxxx ac1d -40 c to +85c eup7907-25vir1 sot23-5 xxxxx ac1b -40 c to +85c eup7907-28vir1 sot23-5 xxxxx ac1e -40 c to +85c eup7907-30vir1 sot23-5 xxxxx ac1g -40 c to +85c eup7907-33vir1 sot23-5 xxxxx ac1h -40 c to +85c EUP7907VIR1 sot23-5 xxxxx ac1a -40 c to +85c eup7907-12jir1 tdfn-8 xxxxx p7907 1t -40 c to +85c eup7907-15jir1 tdfn-8 xxxxx p7907 1c -40 c to +85c eup7907-18jir1 tdfn-8 xxxxx p7907 1d -40 c to +85c eup7907-25jir1 tdfn-8 xxxxx p7907 1b -40 c to +85c eup7907-28jir1 tdfn-8 xxxxx p7907 1e -40 c to +85c eup7907-30jir1 tdfn-8 xxxxx p7907 1g -40 c to +85c eup7907-33jir1 tdfn-8 xxxxx p7907 1h -40 c to +85c eup7907 - ?? ?? ?? ?? ?? ?? lead free code 1: lead free 0: lead packing r: tape & reel operating temperature range i: industry standard package type v: sot-23 j : tdfn-8 output voltage 12:1.2v 15:1.5v 18:1.8v 25:2.5v 28:2.8v 30:3.0v 33:3.3v blank: adjustable note ?g the version of eup7907 with fixed voltage higher than 1.5v can operate at adjustable mode by connecting fb pin to an external resistor divider and its output can be adjusted from 0.8v to 5v. n ~n?t?m?w3^v?mw`r?y?b?g ?pqls? tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com v?mw`r?y?b? w w w . g o f o t e c h . c o m
eup7907 ds7907 ver 1.2 oct . 2009 5 absolute maximum ratings ? v in ,v en ----------------------------------------------------------------------------------------------- -0.3 to 6v ? v out ------------------------------------------------------------------------------------------- -0.3 to (vin+0.3) ? junction temperature -------------------------------------------------------------------------------- 150 ?? ? storage temperature range ----------------------------------------------------------------- -65 ?? to +150 ?? ? lead temperature ------------------------------------------------------------------------------------ 260 ?? ? thermal resistance ja (sot23-5) --------------------------------------------------------------- 205 ??/w thermal resistance ja (tdfn-8) ---------------------------------------------------------------- 72 j /w ? esd rating human body model -------------------------------------------------------------------------- 2kv operating conditions ? v in --------------------------------------------------------------------------------------------------- 2.5 to 5.5v ? v en --------------------------------------------------------------------------------------------------- 0 to 5.5v ? operating temperature range ----------------- ----------------------------------------------- -40 ?? to +85 ?? electrical characteristics t a =25??, v in =v out +1v, or vin=2.5v for v out <1.5v unless otherwise specified eup7907 symbol parameter conditions min. typ. max. unit input voltage v in input voltage 2.5 5.5 v v porth por threshold 2.1 v v porhys por hysteresis 0.4 v i q quiescent current v en =v in , i out =0ma 120 180 a i shdn shutdown current v en =0v 0.1 1 a psrr power supply ripple rejection v in =v nom +1v p-p ,f=1khz,i load =10ma 70 db v fb fb pin voltage 0.784 0.8 0.816 v enable v enh enable high voltage over temperature range 1.5 v v enl disable low voltage over temperature range 0.4 v i en en input current v in =5v, v en =5v or 0v -1 1 a t st start-up time 40 s output voltage v in =v nom +1.0v, i out =10ma -2 +2 % v out output voltage accuracy v in =v nom +1.0v, i out =10ma, temp=-40 ?? to 85?? -3 +3 % v lnr output line regulation v out +0.5v |