TL494 鏅傞枔锛�2023/7/28 11:51:17 闁辫畝锛�2886

TL494鏄竴绋浐瀹氶牷鐜囪剤瀵(di脿o)鍒堕浕璺�锛屽畠鍖呭惈浜嗛枊闂�(gu膩n)闆绘簮鎺у埗鎵€闇€鐨勫叏閮ㄥ姛鑳�锛屽唬娉涙噳(y墨ng)鐢ㄤ簬鍠姝ｆ縺闆欑寮�銆佸崐姗嬪紡銆佸叏姗嬪紡闁嬮棞(gu膩n)闆绘簮銆�

鎻忚堪

TL494鏄竴绋浐瀹氶牷鐜囪剤瀵(di脿o)鍒堕浕璺�锛屽畠鍖呭惈浜嗛枊闂�(gu膩n)闆绘簮鎺у埗鎵€闇€鐨勫叏閮ㄥ姛鑳斤紝寤ｆ硾鎳�(y墨ng)鐢ㄤ簬鍠姝ｆ縺闆欑寮�銆佸崐姗嬪紡銆佸叏姗嬪紡闁嬮棞(gu膩n)闆绘簮銆傚叾鍖呭惈鍏╁€嬭宸斁澶у櫒锛屼竴鍊嬬墖涓婂彲瑾�(di脿o)鎸暕鍣紝涓€鍊嬫鍗€(q奴)鏅傞枔鎺у埗(DTC)姣旇純鍣�锛屼竴鍊嬭剤娌栬綁(zhu菐n)鍚戞帶鍒惰Ц鐧�(f膩)鍣�锛屼竴鍊�5 V锛�5%绮惧害瑾�(di脿o)绡€(ji茅)鍣ㄥ拰杓稿嚭鎺у埗闆昏矾銆俆L494鏈塖O-16鍜孭DIP-16鍏╃ó灏佽褰㈠紡锛屼互閬╂噳(y墨ng)涓嶅悓鍫村悎鐨勮姹�銆�

鐢�(ch菐n)鍝佸湒鐗�

TL494

瑕�(gu墨)鏍煎弮鏁�(sh霉)

鐢�(ch菐n)鍝佸瀷铏�	TL494
鍒堕€犲晢	寰峰窞鍎€鍣�(TI)
瑾�(di脿o)鍒舵柟寮�	瀹氶牷瑾�(di脿o)瀵�
鎺у埗妯″紡	闆诲妯″紡
鏈€楂橀瀹氶牷鐜�	300000Hz
杓稿嚭绔彛	闆欑浜ら尟
姣忕鏈€澶у崰绌烘瘮	45%
灏佽	SOP-16, DIP-16
甯哥敤鎷�?f霉)?/td>	Buck銆佹帹鎸姐€佸崐姗�
VCC闆绘簮	7 V鈥�40 V
VI鏀惧ぇ鍣ㄨ几鍏ラ浕澹�	-0.3 V鈥擵CC-2 V
VO鏅堕珨绠￠泦闆绘サ闆诲	40
姣忓€嬫櫠楂旂鐨勯泦闆绘サ闆绘祦	200 mA
娴佸叆鍙嶉寮曡叧鐨勯浕娴�	0.3 mA
fOSC鎸暕鍣ㄩ牷鐜囪寖鍦�	1 kHz鈥�300 kHz
CT鎸暕鍣ㄥ畾鏅傞浕瀹瑰€�	0.47 nF鈥�10000 nF
RT鎸暕鍣ㄥ畾鏅傞浕闃诲€�	鍦�1.8 k鈥�500 k姝愬
Tstg鍎插瓨婧害鑼冨湇	鈥�65/150掳C

鐗归粸

瀹屾暣鐨凱WM鍔熺巼鎺у埗闆昏矾
200 mA鐏岄浕娴佹垨婧愰浕娴佺殑闈炴壙璜捐几鍑�
杓稿嚭鎺у埗閬告搰鍠鎴栨帹鎸芥搷浣�
鍏�(n猫i)閮ㄩ浕璺姝㈠湪浠讳綍涓€鍊嬭几鍑轰笂鐢�(ch菐n)鐢熼洐鑴堟矕
鍙畩姝诲崁(q奴)鏅傞枔鍙帶鍒剁附鑼冨湇
鍏�(n猫i)閮ㄧ┅(w臎n)澹撳櫒鎻愪緵鍏锋湁5%瀹瑰樊鐨勭┅(w臎n)瀹�5V鍙冭€冮浕婧�
闆昏矾鏋舵(g貌u)鍙紩鏉惧鐝�(xi脿n)鍚屾

鎳�(y墨ng)鐢ㄩ牁(l菒ng)鍩�

闆㈢窔闆绘簮
闄嶅杞�(zhu菐n)鎻涘櫒

闆昏矾鍦�

寮曡叧鍦�

寮曡叧鍔熻兘瑾槑

寮曡叧铏�	寮曡叧鍚嶇ū	鎻忚堪
1	1IN+	瑾ゅ樊鏀惧ぇ鍣�1鐨勫悓鐩歌几鍏ョ銆傚湪闁夌挵(hu谩n)绯荤当(t菕ng)涓�锛岃鎺у埗閲忕殑绲﹀畾淇¤櫉灏囬€氶亷瑭插紩鑵宠几鍏ヨ宸斁澶у櫒;鑰屽湪闁嬬挵(hu谩n)绯荤当(t菕ng)涓�锛岃┎寮曡叧闇€鎺ュ湴鎴栨嚫绌恒€�
2	1IN	瑾ゅ樊鏀惧ぇ鍣�1鐨勫弽鐩歌几鍏ョ銆傚湪闁夌挵(hu谩n)绯荤当(t菕ng)涓�锛岃鎺у埗閲忕殑鍙嶉淇¤櫉鍙€氶亷瑭插紩鑵宠几鍏ヨ宸斁澶у櫒锛屾鏅傞倓闇€瑕佸湪瑭插紩鑵宠垏寮曡叧3涔嬮枔鎺ュ叆鍙嶉缍�(w菐ng)绲�(lu貌);鑰屽湪闁嬬挵(hu谩n)绯荤当(t菕ng)涓�锛岃┎寮曡叧闇€鎺ュ湴鎴栨嚫绌�銆�
3	FEEDBACK	鍙嶉/PWM姣旇純鍣ㄨ几鍏ョ銆傚湪闁夌挵(hu谩n)绯荤当(t菕ng)涓�锛屽彲浠ユ牴鎿�(j霉)闇€瑕佸湪瑭插紩鑵宠垏寮曡叧2涔嬮枔鎺ュ叆涓嶅悓椤炲瀷鐨勫弽楗嬬恫(w菐ng)绲�(lu貌)锛屾(g貌u)鎴愭瘮渚�銆佹瘮渚嬬⿳鍒嗗拰绌嶅垎绛夊悇绋鍨嬬殑瑾�(di脿o)绡€(ji茅)鍣�锛屼互婊胯冻涓嶅悓鐢ㄦ埗闇€姹�銆�
4	DTC	姝诲崁(q奴)鏅傞枔鎺у埗姣旇純鍣ㄨ几鍏ョ銆傝┎绔敤浜庤ō(sh猫)缃甌L494姝诲崁(q奴)鏅傞枔鐨勫彇鍊�銆傝┎寮曡叧鎺ュ湴鏅�锛屾鍗€(q奴)鏅傞枔鏈€灏�锛屽彲鐛插緱鏈€澶у崰绌烘瘮銆�
5	CT	鎸暕鍣ㄥ畾鏅傞浕瀹规帴鍏ョ銆侰T鐨勫彇鍊艰寖鍦嶉€氬父鍦∣.OOl锝濷.lyF涔嬮枔銆�
6	Rr	鎸暕鍣ㄥ畾鏅傞浕闃绘帴鍏ョ銆傝叧鐨勫彇鍊艰寖鍦嶉€氬父鍦�5锝瀕OOkQ涔嬮枔銆�
7	GND	淇¤櫉鍦�(鑺墖宸ヤ綔鍙冭€冨湴)銆�
8	Cl	杓稿嚭鏅堕珨绠T1鐨勯泦闆绘サ绔�锛岃┎绔偤姝ｅ悜鑴堟矕杓稿嚭绔�銆傚湪鎺ㄦ尳宸ヤ綔妯″紡涓嬶紝瑭茬杓稿嚭姝ｅ悜鑴堟矕淇¤櫉锛岃叧11杓稿嚭璨�(f霉)鍚戣剤娌栦俊铏�锛屽叐鑰呭湪鐩镐綅涓婄浉宸�1800锛岀稉(j墨ng)闅旈洟鏀惧ぇ鍚庡垎鍒ュ幓椹�(q奴)鍕曢枊闂�(gu膩n)绠°€傚湪鍠宸ヤ綔妯″紡涓�锛岃┎绔彲浠ヨ垏寮曡叧11骞惰伅(li谩n)鍦ㄤ竴璧�锛屼互鎻愰珮鑴堝瑾�(di脿o)鍒舵帶鍒跺櫒TL494鐨勮几鍑鸿兘鍔�銆�
9	El	杓稿嚭鏅堕珨绠T1鐨勭櫦(f膩)灏勬サ绔紝瑭茬鐐哄紩鑵�8杓稿嚭鑴堟矕淇¤櫉鐨勫弮鑰冨湴绔�锛屼竴鑸垏寮曡叧7鐩存帴鐩搁€ｃ€�
10	E2	杓稿嚭鏅堕珨绠T2鐨勭櫦(f膩)灏勬サ绔�锛岃┎绔偤寮曡叧11杓稿嚭鑴堟矕淇¤櫉鐨勫弮鑰冨湴绔�锛屼竴鑸垏寮曡叧7鐩存帴鐩搁€�銆�
11	C2	杓稿嚭鏅堕珨绠T2鐨勯泦闆绘サ绔�锛岃┎绔偤鍙嶅悜鑴堟矕杓稿嚭绔�銆傚湪鎺ㄦ尳宸ヤ綔妯″紡涓�锛岃┎绔几鍑哄弽鍚戣剤娌栦俊铏燂紝寮曡叧8杓稿嚭姝ｅ悜鑴堟矕淇¤櫉锛屽叐鑰呭湪鐩镐綅涓婄浉宸�1800锛岀稉(j墨ng)闅旈洟鏀惧ぇ鍚庡垎鍒ュ幓椹�(q奴)鍕曢枊闂�(gu膩n)绠°€傚湪鍠宸ヤ綔妯″紡涓�锛岃┎绔彲浠ヨ垏寮曡叧8骞惰伅(li谩n)鍦ㄤ竴璧�锛屼互鎻愰珮鑴堝瑾�(di脿o)鍒舵帶鍒跺櫒TL494鐨勮几鍑鸿兘鍔�銆�
12	Vcc	鍋忕疆闆绘簮(鑺墖宸ヤ綔闆绘簮)鎺ュ叆绔€傛噳(y墨ng)鐢ㄦ檪瑭茬蹇呴渶澶栨帴涓€鍊嬪閲忓湪O.lUF浠ヤ笂鐨勬烤娉㈤浕瀹瑰埌鍏叡鎺ュ湴绔�銆�
13	OUTPUT CTRL	杓稿嚭宸ヤ綔妯″紡鎺у埗绔€傞€氶亷瑭插紩鑵冲彲閬告搰鎺ㄦ尳鎴栧柈绔几鍑烘ā寮�銆傜暥(d膩ng)瑭茬鎺ラ珮闆诲钩鏅�锛孴L494灏囧伐浣滃湪鎺ㄦ尳宸ヤ綔妯″紡涓�锛屾鏅傛渶澶у崰绌烘瘮鍙仈(d谩)48%銆傜暥(d膩ng)瑭茬鎺ヤ綆闆诲钩鏅傦紝鍏╄矾杓稿嚭鑴堟矕瀹屽叏鐩稿悓锛屾渶澶у崰绌烘瘮鍙仈(d谩)鍒�96%銆�
14	REF	鍩烘簴(zh菙n)闆绘簮杓稿嚭绔�锛屽叾杓稿嚭闆绘祦鍙仈(d谩)lOmA銆�
15	2IN-	瑾ゅ樊鏀惧ぇ鍣�2鐨勫弽鐩歌几鍏ョ銆傝┎绔彲浠ユ帴鍏ヤ繚璀�(h霉)闆昏矾鐨勫弽楗嬩俊铏�锛岀敤浠ュ鐝�(xi脿n)閬庨浕娴�銆侀亷闆诲绛夋晠闅滀繚璀�(h霉)銆�
16	2IN+	瑾ゅ樊鏀惧ぇ鍣�2鐨勫悓鐩歌几鍏ョ銆傝┘绔偤淇濊(h霉)闁ュ€奸浕澹�(娴�)瑷�(sh猫)瀹氱锛岀敤浠ュ鐝�(xi脿n)閬庨浕娴�銆侀亷闆诲绛夋晠闅滀繚璀�(h霉)銆�